Rca Prodigi rdr42 series User manual

Communications Systems

RDR42x0 Professional Digital

Two-Way Radios

INSTRUCTION MANUAL

Congratulations and Thank You for selecting

the PRODIGI RDR42x0 Series portable two-way

radio from RCA Communications Systems

- The most trusted name in radio!

Our newest digital series professional communications products

based on DMR technology establishes a benchmark in premium

digital two-way radio equipment, made to perform ﬂawlessly under the

most demanding commercial conditions. Cutting edge design, high-

end professional grade materials and components, simple operation

and superior assembly quality: RCA Communications Systems has

it all, including our exclusive no-nonsense, three-year “Warranty

Protection Program,” one of the most comprehensive warranties in the

communications industry.

To ensure you achieve maximum performance from your RDR4220,

RDR4250, or RDR4280 radio, please be sure to carefully read this

manual.

MODELS COVERED IN THIS MANUAL:

• RDR4220V VHF Two-Way Radio

• RDR4220U UHF Two-Way Radio

• RDR4250V VHF Two-Way Radio

• RDR4250U UHF Two-Way Radio

• RDR4280V VHF Two-Way Radio

• RDR4280U UHF Two-Way Radio

YEAR

WARRANTY

PROTECTION PROGRAM

CONTENTS:

Product Inspection..........2

RCA RDR42x0 Series Overview..........2

Preparing Radio For Initial Use Setting Up the Charger..........3

Battery Information

Charging the Battery..........3

Battery Storage..........3

Attaching the Battery..........3

Attaching / Removing the Antenna..........3

Attaching / Removing the Belt Clip..........4

Connecting Audio Accessories..........4

Turn On/O the Radio..........4

Adjusting the Volume..........4

Select A Channel..........4

Programmable Buttons..........4

Push-To-Talk (PTT) Button..........5

Switching Between Analog/Digital Mode..........5

Accessing the Programmed Functions..........5

Function Keypad..........5

Radio Keypad (RDR4280 only)..........5

Operational Status Indicators..........5

Display Icons..........6

Call Icons..........6

LED Indicator..........6

Audio Tones..........6

Making and Receiving Calls

Selecting a Zone..........7

Selecting a Channel, Subscriber ID or Group ID..........7

Receiving and Responding to a Radio Call..........7

Receiving and responding to an Group Call..........7

Receiving and responding to an Private Call..........7

Receiving an All Call..........7

Monitoring A Channel (Analog)..........7

Making a Radio Call..........7

Making a Call

Making a Group Call..........7

Making an All Call..........8

Making a Private Call..........8

Making Group / Private Call with One Touch Call Function..........8

Emergency Operation..........9

Initiating & Responding to Emergency Alarm..........9

Exiting Emergency Mode..........9

Advanced Features

Radio Check..........9

Initiating Remote Monitor (RDR4250 / RDR4280)..........9

Contacts Setting (RDR4250 / RDR4280)..........10

Group Call from Contacts (RDR4250 / RDR4280)..........10

Private Call from Contacts (RDR4250 / RDR4280)..........10

Alert Tone Settings

Activating/Deactivating Call Alert Tones Private Calls (RDR4250 /

RDR4280)..........10

Activating/Deactivating Call Alert Tones Group Calls (RDR4250 /

RDR4280)..........10

Activating/Deactivating Call Alert Tones Alert Calls (RDR4250 /

RDR4280)..........10

Activating/Deactivating Call Alert Tones Text Messages (RDR4250 /

RDR4280)..........10

Call History Features (RDR4250 / RDR4280)

Accessing the Call History..........11

Storing an Alias or ID from a Call List (RDR4250 / RDR4280)..........11

Deleting a Call from Call List..........11

Call Alert (RDR4250 / RDR4280)..........11

Receiving and Responding to a Call Alert..........11

Making a Call Alert from the Contact List (RDR4250 /

RDR4280)..........11

Text Messages Features (RDR4250 / RDR4280)

Navigating To Messages..........11

Receiving Text Messages..........11

Managing Received Text Messages..........11

Viewing a Text Message from the Inbox..........11

Writing and Sending Text Messages (RDR4280)..........12

Sending a Quick Text Message (RDR4250 / RDR4280)..........12

Managing Failed-to-Send Text Messages..........12

Resending a Text Message..........12

Forwarding a Text Message..........12

Managing Sent Text Message..........12

Viewing Sent Text Messages..........12

Deleting All Sent Text Messages from Sent Items..........13

Replying to a Text Message from the Inbox..........13

Deleting All Text Message from the Inbox..........13

Encryption

Making and Encrypted Call..........13

Turning Encryption On/O..........14

Dual Tone Multi Frequency (DTMF)..........14

Radio Enable/Disable (RDR4250 / RDR4280)..........14

Scanning

Starting and Stopping Scan..........14

Responding to a Scan..........15

Scan Lists..........15

Viewing an Entry in the Scan List (RDR4250 / RDR4280)..........15

Deleting a Nuisance Channel..........15

Restoring a Nuisance Channel..........15

Radio Settings (RDR4250 / RDR4280)

Keypad Locked and Keypad Unlocked..........15

Turning Keypad Tones On or O..........15

Setting the Power Level..........15

Controlling the Display Backlight (RDR4250 / RDR4280)..........16

Controlling the Display Brightness (RDR4250 / RDR4280)..........16

Switching Day/Night Mode..........16

Channel Display (RDR4250 / RDR4280)..........16

Man Down..........16

Lone Worker..........16

Squelch Level (Analog Mode Only)..........17

Tones/Alerts..........17

Turning the Radios Tones/Alerts On/O..........17

Turning the LED Indicator On/O (RDR4250 / RDR4280)..........17

Radio PIN Lock (RDR4250 / RDR4280)..........18

Turning Voice Operation Transmission (VOX) Feature On/O..........18

Talkaround..........18

Function Keys (RDR4250 / RDR4280)..........18

Keypad Mode (RDR4250 / RDR4280)..........19

Vibration (Non I.S.(Intrinsically Safe)Modes Only)..........19

GPS Settings (Digital Mode Only)..........19

General Radio Information (RDR4250 / RDR4280)..........19

CARE AND CLEANING..........20

TROUBLESHOOTING..........20

CONTENTS: (continued)

Communications Systems

RDR42x0 Professional Digital

Two-Way Radios

INSTRUCTION MANUAL

PRODUCT INSPECTION

Prior to unpacking the RDR42x0 series portable radio, please inspect

the packaging for signs of damage and report any damage or missing

components immediately to your RCA Communications System Sales

and Service Center. Every RDR42x0 series portable radios should

come with the following items:

Item Qty.

Handheld Radio Unit 1

2300 mAh Li-Ion Battery 1

Whip Antenna 1

Heavy Duty Belt Clip 1

Desktop Rapid Charger Base 1

Power Supply for Charger Base 1

Wrist Strap 1

2300 mAh

Li-Ion Battery

Desktop Rapid

Charger Base

Power Supply for

Charger Base

Heavy Duty

Belt Clip

VHF UHF

Whip Antenna

RDR4220

Handheld Radio

RDR4280

Handheld Radio

RDR4250

Handheld Radio

1Side Button 1

(Programmable) 7Channel Knob 13 2-Way Navigation

Button 19 Antenna

2Push-To-Talk Button

(PTT) 8Top Button

(Programmable) 14 Return / Home Button 20 Battery

3Side Button 2

(Programmable) 9Speaker 15 Front Button (Programmable)

4Side Button 3

(Programmable) 10 Display (RDR4250 / RDR4280) 16 Keypad

5LED Indicator 11 OK / Menu Button 17 Microphone

6On/O/ Volume Knob 12 Front Button (Programmable) 18 Accessory Connector

RDR4220 RDR4250 RDR4280

6 7

Communications Systems

RDR42x0 Professional Digital

Two-Way Radios

INSTRUCTION MANUAL

Preparing Your Radio for Initial Use Setting Up Your Charger

1. Plug the adapter’s AC connector into the AC outlet socket. (see

image A)

2. Plug the adapter’s DC connector into the DC socket on the back of

the charger. (see image B)

3. Place the radio with the battery attached, or the battery alone, in the

charger. (see image C)

4. Make sure the battery contact is touching the charging terminals.

The charging process begins when the red LED light illuminates.

5. The green LED light will illuminate approximately two hours later,

indicating the battery is fully charged.

Battery Storage

1. Fully charge the battery before storing it for an extended period of

time to avoid battery damage due to over-discharge.

2. Recharge a battery after three months storage to avoid reduced

battery capacity due to over-discharge.

3. When storing a battery, keep it in a dry place at room temperature.

Attaching/ Removing the Battery

1. To install the battery, please place it into the groove on

the top of the radio chassis about 5mm away from latch.

If the radio has the belt clip installed, you will have to press one side

of the clip to raise it and then slide the battery in proper position.

Press the battery with your ﬁngers and push the battery until you

hear a latch click. The battery is now installed. (See Figure 1)

2. If you want to remove the battery from the radio, ﬁrst press the

battery latch located on the bottom of the radio, and then press down

to slide the battery about 5mm to release the latch. (See Figure 2)

Attaching the Antenna

Screw the antenna into the connector at the top of the radio by holding

the bottom of the antenna and turn it clockwise until secure. (See

Figure 3)

Battery Information

Charging the Battery

Your radio is powered by a Lithium-Ion (Lilon) battery. To avoid damage

and comply with warranty terms, charge the battery using only an

original RCA charger, exactly as described in the charger user guide.

When the charger’s LED illuminates red, it is an indication that the

battery is being correctly charged. When the LED illuminates green,

the battery charge is complete.

Note: Charge a new battery 12 to 14 hours before initial use for best

performance. Maximum battery capacity is normally achieved after

two or three full charge / discharge cycles.

Caution: To reduce the risk of injury, use only batteries speciﬁed by

RCA Communications Systems.

– To avoid risk of personal injury, do not dispose of batteries in a ﬁre. -

Dispose of batteries according to local recycling regulations. Do not

dispose as household waste.

– Never attempt to disassemble the battery.

– When charging a battery, keep it at a temperature between 41°F ~

104°F (5°C ~ 40°C) to ensure a full charge. Temperatures outside

this range signiﬁcantly reduce battery life. The operating time (talk-

time and standby time) is noticeably shorter than normal, replace

the battery.

– Before charging a battery attached to a radio, turn the radio o to

ensure a full charge. Never leave a radio on while in the charger, as

it can damage both the battery and the radio; the charger is not a

radio stand.

Image A Image B

Image C

– Do not cut o the power supply or remove battery while charging.

– Never charge a battery that is wet. Dry it with soft cloth prior

charging.

– The battery will eventually weaken. When the operating time (talk-

time and standby time) becomes noticeably shorter than normal,

replace the battery.

– Battery performance greatly decreases at temperatures below -4°F

(-20°C). Having a spare battery is always necessary in extremely

cold environments. A cold battery may work again when it returns to

room temperature, so keep it for later use.

– Dust on the battery contact may cause the battery not to work or

charge properly. Use a clean dry cloth to wipe it before attaching

the battery to the radio.

– Batteries with damaged contacts can be extremely dangerous. Any

battery with damage to one or more contacts should be replaced

immediately and not used under any circumstances.

1 2

Communications Systems

RDR42x0 Professional Digital

Two-Way Radios

INSTRUCTION MANUAL

Attaching / Removing the Belt Clip

Use the 2 screws (M2.5x8.0) supplied with the radio and insert these

screws through the holes in the radio clip and into the holes in the

aluminum case. If you want to remove the clip from the radio, just

unscrew them, and remove the clip. You can put the screws back into

the radio to make sure you do not lose them. (See Figure 4)

Programmable Buttons

Your RCA Communications Systems Dealer can program the

programmable buttons as shortcuts to radio functions or preset

channels/groups depending on the duration of a button press:

Short Press - Press and release quickly.

Long Press - Press and hold for the programmed duration (between 1

seconds and 3.75 seconds).

Connecting Audio Accessories

Open the cover of the connector for external speaker/MIC, and

then insert the plug of the external speaker or microphone onto the

connector socket of the radio. When screwing the accessory plug,

make sure it is properly aligned (straight) to ensure the right connection

to the connector of the radio. (See Figure 5)

All Alert Tones On/O - Toggles all tones and alerts on or o.

Emergency On - Initiates an emergency alarm or call.

Emergency O - Cancels an emergency alarm or call.

Nuisance Delete - Temporarily removes an unwanted channel, except the

Selected Channel, from the scan list. The Selected Channel refers to the

user’s selected zone/channel combination from which scan is initiated.

High/Low Transmit Power - Toggles transmit power level between high

and low.

Monitor On/O - Monitors a selected channel for activity.

One Touch Access - Directly initiates a predeﬁned Private or Group Call,

a Call Alert or a Quick Text message.

Scan On/O - Toggles scan on or o. Tight/Normal Squelch -

Toggles squelch level between tight and normal squelch levels.

Privacy On/O - Toggles privacy (basic voice encryption) on or o.

VOX On/O - Toggles Voice Activated Function on or o.

Lone Worker On/O - Toggles Lone Worker feature On or O, on per

channel basis.

Zone Toggle (RDR4220) - Toggles between Channel Zone 1 and Channel

Zone 2.

Battery Indicator (RDR4220) - Indicates battery charge level, low,

medium or high.

Turn On/O the Radio

1. Rotate the On/O/Volume Control Knob clockwise until you hear a

click. The LED blinks orange and a brief tone sounds, indicating that

the power up test is successful. The RDR4250 & RDR4280 radio

displays “RCA RDR42X0 DMR Radio” when powered up.

2. To turn o the radio, rotate the knob counterclockwise until you hear

a click.

Note: There is no power up tone if the radio tones/alerts function is

disabled. If your radio does not power up, check your battery. Make

sure that it is charged and properly attached. If your radio still does not

power up, contact your RCA Communications Systems dealer.

Adjusting the Volume

To increase the volume, turn the On/O/ Volume Control Knob

clockwise. To decrease the volume, turn this knob counterclockwise.

Select A Channel

Rotate the Channel Selector Knob to the desired channel. or to switch

between channels. Channels can be conﬁgured as analog or digital

channel. Your radio has features that are available in both analog and digital

mode. The minor dierences in the way each feature works does not aect

the performance of your radio.

Programmable Functions

Adjust Power Level Nuisance Delete

Adjust Squelch Level One Touch Call 1

All Alert Tones On/O One Touch Call 2

Accessory Link Audio Switch One Touch Call 3

Channel Down One Touch Call 4

Channel Knob Disable One Touch Call 5

Channel Up One Touch Call 6

Contact List Preset Channel1

Emergency Alarm Ack Preset Channel2

Emergency O Preset Channel3

Emergency On Preset Channel4

Encryption On/O Record Delete

Favorite Contact List Record Play/Play Next/Play Stop

Group Call Alert Repeater/Talk Around

Home Screen Scan On/O

Keypad Lock Squelch On/O

Lone Worker On/O Surveillance/Covert Mode

ManDown On/O VOX On/O

Manual Dial For Private Zone Down

Momentary Monitor Zone Toggle (RDR4220)

Monitor Zone Up (RDR4220)

None

Communications Systems

RDR42x0 Professional Digital

Two-Way Radios

INSTRUCTION MANUAL

Radio Keypad (RDR4280 only)

You can use the alphanumeric keypad to access the radio features. You can

also use the keypad to enter subscriber numbers or IDs, and text messages.

Note: Some characters require that you press a key multiple times. The

table shows the number of times a key needs to be pressed to generate the

required character.

Operational Status Indicators

Your radio indicates its operational status through the following:

• Display Icons (RDR4250 / RDR4280)

• Call Icons (RDR4250 / RDR4280)

• Sent Item Icons (RDR4250 / RDR4280)

• LED Indicator (Entire RDR42x0 Series)

• Audio Tones (Entire RDR42x0 Series)

Push-To-Talk (PTT) Button

The PTT button on the side of the radio has two main functions:

-Press and hold down PTT button to initiate and call and talk.

Release the PTT button to listen. The microphone is activated

when the PTT button is pressed.

-If a call is in progress, the PTT button allows the radio to transmit to

the other radios that are part of the call.

Note: If the Talk Permit Tone is enabled, wait until the short alert tone

ends before talking.

During a call, if the Channel Free Indication feature is enabled on your

radio (programmed by your RCA Communications Systems Dealer),

you will hear a short alert tone the moment the target radio (the radio

that is receiving your call) releases the PTT button, indicating the

channel is free for you to respond. You will also hear the Channel Free

Indication tone if your call is interrupted, for example, when the radio

receives an Emergency Call.

Switching Between Analog/Digital Mode

Each channel in your radio can be programmed as an analog channel

or a digital channel. Use the Channel Selector Knob to switch between

an analog or a digital channel.

Note: When switching from digital to analog, certain features of the radio

become unavailable.

Accessing the Programmed Functions

You can access various radio functions one of the following ways: A short

or long press of the relevant programmable buttons. OR -

-To access the main menu, press the [

] button. To toggle through

the menu options, press “ ” or “ ”.

-To select a function or access a sub-menu, press the [

] button.

-To go back one menu level, or return to the previous screen, press

the [

BAC K

] button.

Note: Your radio will exit the menu after a period of inactivity and returns

to Main Menu.

OK BACK

Key 1 2 3 4 5 6 7 8 9 10 11 12 13

1,.? 1 . , ? ! @ & ‘ % - : * #

2abc A B C 2

3def D E F 3

4ghi G H I 4

5jkl J K L 5

6mno M N O 6

7pqrs P Q R S 7

8tuv T U V 8

9wxyz W X Y Z 9

0CAPS

0 NOTE: Press to enter “0” and long press to

activate the CAPS lock. Another long press to

turn o󰀨 the CAPS lock.

*DEL * or Del NOTE: Press during text entry to delete

a character.

# or Space NOTE: Press during text entry to

insert a space.

Number of Times Key is Pressed

Communications Systems

RDR42x0 Professional Digital

Two-Way Radios

INSTRUCTION MANUAL

Display Icons

The LCD display shows radio status, text entries, and menu entries.

The following are icons that appear on the radio’s display.

No Signal

The number of bars displayed represents the radio

signal strength and is only displayed while the radio

is in receiving mode.

Received Signal

Strength Indicator

(RSSI)

The number of bars displayed represents the radio

signal strength. Four bars indicate the strongest

signal. This icon is only displayed while receiving.

Battery The number of bars (0 - 4) shown indicates the

charge remaining in the battery.

Accessory Link The Accessory Link feature is enabled but there is

no remote Accessory Link device connected.

Accessory Link

Connected

The Accessory Link feature is enabled. The icon

stays lit when one or more remote Accessory Link

devices are connected.

Scanning Scan land on Scan feature is enabled.

Encryption Enable The Encryption feature is enabled.

GPS Available The GPS feature is enabled. The icon stays lit when

a position ﬁx is available.

GPS Not Available

/ Out of Range

The GPS feature is enabled. The icon stays lit when

a position ﬁx is available.

Accessories Con-

nected Accessory Connected

L H/ Power Level Radio is set at Low/High power.

DM Direct Mode Talk around mode.

RM Repeater Mode Repeater mode

Unread Message Unread Message

Missed Call Missed Call

VOX Enable VOX Enable

Speaker Open Speaker Open

Call Icons

The following icons appear on the radio’s display during a call and in the

Contacts list to indicate ID type.

Sent Items Icons

The following icons appear at the top right corner of the radio’s display

in the Sent Items folder.

Switch Input Method

Long press # key to switch input method between,

LED Indicator

The LED indicator shows the operational status of your radio.

Audio Tones

Alert tones provide you with audible indications of the radio’s status or

the radio’s response to data received.

Continuous Tone - A monotone sound. Sounds continuously until

termination.

Periodic Tone - Sounds periodically depending on the duration set by

the radio.

Repetitive Tone - A single tone that repeats itself until it is terminated

by the user.

Momentary Tone - Sounds only once for a short period of time deﬁned

by the radio.

Lowercase Uppercase Digit

The text message to a subscriber alias or ID’s pending transmission,

followed by waiting for acknowledgment. Or The text message to a

group alias or ID is pending transmission.

Blinking Red – Radio is at low battery condition

Solid Orange – Powering up

Solid Green – Radio is receiving, or detecting activity over the air.

Solid Red – Radio is transmitting

Blinking Orange – Radio is scanning, or in selective call, or emergency

state

Note: When the LED is solid green, it indicates the radio detects activity over

the air. Due to the nature of the digital protocol, this activity may or may not

aect the radio’s programmed channel.

Accessory Link Device Found List

Private Call - Indicates a Private Call in progress. In the

Contacts list, it indicates a subscriber alias (name) or ID

(number).

Sent Successfully

Group Call/All Call - Indicates a Group Call or All Call

in progress. In the Contacts list, it indicates a group

alias(name) or ID (number).

Send Failed

Accessory Link Audio Device - Accessory Link-enabled

audio device, such as a headset.

abc

ABC

123

Battery indicator

Battery Usage Status Audio Indication (RDR4220 model) Display Indication (RDR4250/RDR4280)

Power ≤ 100% 4 Beeps

Power ≥ 80% 3 Beeps

Power ≥ 40% 2 Beeps

Power ≤ 40% 1 Beep

Power ≤ 10% Low Battery Beep Warning

Communications Systems

RDR42x0 Professional Digital

Two-Way Radios

INSTRUCTION MANUAL

Selecting a Channel, Subscriber ID or Group ID

Once the required zone is displayed (if your radio has multiple zones),

turn the programmed Channel Selector Knob to select the desired

channel, subscriber alias or ID, or group alias or ID.

Receiving and Responding to a Radio Call

Once the channel, Subscriber ID or Group ID is displayed, you can proceed

to receive and respond to calls. To decode an encrypted call, your radio

must have the same Encryption Key, or the same Key Value and Key ID (if

ARC4 encryption type is utilized) as the transmitting radio (the radio you

are receiving the call from).

Selecting a Zone

Zones are groups of channels.

RDR4220 has up to 32 channels split in 2 zones with a maximum of 16

channels per zone. RDR4250 and RDR4280 have up to 1000 channels

in a ﬂexible zone setup with a maximum of 1000 channels per zone.

You may switch among zones using the Radio Menu (RDR4250 and

RDR4280 only), the programmable function keys or the Channel Knob

as programmed by your RCA Communications Systems dealer.

1. Press “ ” to access the menu.

2. Press “ ” or “ ” to navigate to the Zone menu.

3. Press “ ” to select the Zone menu.

4. Press “ ” or “ ” to navigate to the desired Zone.

5. Press “ ” to select the Zone.

Making and Receiving Calls

Receiving and Responding to a Group Call

To receive a Group Call, your radio must be conﬁgured with the Group

ID in the RX Group List on the channel you are receiving the call on. This

is programmed by your RCA Communications Systems Dealer. When

you receive a Group Call:

1. The LED blinks green.

2. Your radio unmutes and the incoming call sounds through the radio

speaker.

3. The Group Call icon appears on the display (RDR4250 and RDR480

only). The ﬁrst text line shows the Caller Subscriber ID/Alias. The

second text line displays the Group Call ID/Alias.

4. To respond to the call, press the [PTT] button, the LED indicator

lights up red.

5. Hold the radio vertically 1 to 2 inches (2.5 to 5.0 cm) from your

mouth and then speak clearly into the microphone.

Note: If Talk Permit Function is enabled, wait for the Talk Permit Tone

to sound before speaking.

6. Release the [PTT] button to listen.

7. If there is no voice activity for a set period of time, the call ends.

Receiving and Responding to a Private Call

A Private Call is a direct call from one individual radio to another

individual radio. When you receive a Private Call:

1. The LED blinks green.

2. Your radio unmutes and the incoming call sounds through the radio

speaker.

3. The Private Call icon appears on the display (RDR4250 and RDR480

only). The ﬁrst text line shows the Caller Subscriber ID/Alias.

4. To respond to the call, press the [PTT] button, the LED indicator

lights up red.

Receiving an All Call

An All Call is a call from an individual radio to every radio on the same

channel or a channel with the same frequency and color code as the

transmitting radio. It is used to make important announcements requiring

the attention of all radio users. When you receive an All Call:

1. The LED blinks green.

2. Your radio unmutes and the incoming call sounds through the radio

speaker.

3. The All Call icon appears on the display (RDR4250 and RDR480

only). The ﬁrst text line shows the Caller ID/Alias. The second text

line displays the All Call ID/Alias.

4. Once the All Call ends, the radio returns to the previous screen

before receiving the call.

Note: You cannot respond to an All Call. The radio will stop receiving

the All Call if you switch to a dierent channel while receiving the call

Monitoring A Channel (Analog)

Use the Monitor feature to make sure a channel is clear before

transmitting by listening for activity on the channel.

1. Press the programmed Monitor function key and listen for activity.

The monitor icon appears on the display.

2. If you hear activity on the channel the channel is busy. If you hear

“white noise” on the channel the channel is free.

Making a Radio Call

Select a channel by using the channel selector knob and/or

the programmable function keys, as programmed by your RCA

Communications Systems dealer. After selecting a channel, you can make

a call to a Subscriber ID/Alias, or Group ID/Alias (other than the Group ID

already assigned as TX Contact on the channel) by using a programmed

One Touch Call function key, the contact list in the radio menu or a manual

dial.

Making a Call

Making a Group Call

To make a Group Call, your radio must be conﬁgured with the Group

ID, as a TX Contact on the channel (the Group ID of the group you are

transmitting to).

1. Turn the Channel Selector Knob to select the desired channel.

2. When on the desired channel, press the [PTT] button to make the

call, the LED indicator lights up red.

3. Hold the radio vertically 1 to 2 inches (2.5 to 5.0 cm) from your mouth

and then speak clearly into the microphone.

Note: If Talk Permit Function is enabled, wait for the Talk Permit Tone to

sound before speaking.

4. Release the [PTT] button to listen.

5. When the target radio responds, the LED lights up red.

6. If there is no voice activity for a predetermined period of time, the call

ends. The radio returns to the screen you were on prior to initiating

the call (RDRD4250 and RDR4280 only).

5. Hold the radio vertically 1 to 2 inches (2.5 to 5.0 cm) from your

mouth and then speak clearly into the microphone.

Note: If Talk Permit Function is enabled, wait for the Talk Permit Tone

to sound before speaking.

6. Release the [PTT] button to listen.

7. If there is no voice activity for a set period of time, the call ends.

Communications Systems

RDR42x0 Professional Digital

Two-Way Radios

INSTRUCTION MANUAL

Making an All Call

An All Call is a call from an individual radio to every radio on the same

channel or a channel with the same frequency and color code as the

transmitting radio. It is used to make important announcements requiring

the attention of all radio users. Your radio must be programmed by your

RCA Communications Systems Dealer to allow you to use this feature.

To initiate an All Call:

1. Turn the Channel Selector Knob to select the designated All Call

channel with a preset All Call Group ID/Alias as TX Contact.

2. Press the [PTT] button to make the call. The LED lights up red.

3. Hold the radio vertically 1 to 2 inches (2.5 to 5.0 cm) from your mouth

and then speak clearly into the microphone.

Note: If Talk Permit Function is enabled, wait for the Talk Permit Tone to

sound before speaking.

4. Release the [PTT] button.

Or (RDRD4250 and RDR4280 only)

1. Turn the Channel Selector Knob to select the desired channel.

2. Press “ ” to access the menu.

3. Press “ ” or “ ” to navigate to the Contacts. Press “OK”.

4. Press “ ” to enter the Contacts List.

5. Press “ ” or “ ” to navigate to the All Call Group ID/Alias.

When highlighted, press the [PTT] button to make the call. The LED

lights up red.

6. Hold the radio vertically 1 to 2 inches (2.5 to 5.0 cm) from your mouth

and then speak clearly into the microphone.

Note: If Talk Permit Function is enabled, wait for the Talk Permit Tone to

sound before speaking.

7. Release the [PTT] button.

Note: Users cannot respond to an All Call.

Or (RDRD4250 and RDR4280 only)

1. Turn the Channel Selector Knob to select the desired channel.

2. Press “ ” to access the menu.

3. Press “ ” or “ ” to navigate to the Contacts. Press “OK”.

4. Press “ ” to enter the Contacts List.

5. Press “ ” or “ ” to navigate to the desired Group ID/Alias.

When highlighted, press the [PTT] button to make the call. The LED

lights up red.

6. Hold the radio vertically 1 to 2 inches (2.5 to 5.0 cm) from your mouth

and then speak clearly into the microphone.

Note: If Talk Permit Function is enabled, wait for the Talk Permit Tone to

sound before speaking.

7. Release the [PTT] button.

Making a Private Call

To make a Private Call, your radio must be conﬁgured with the Private

Subscriber ID, as a TX Contact on the channel (the Subscriber ID of the

radio you are transmitting to).

1. Turn the Channel Selector Knob to select the desired channel.

2. When on the desired channel, press the [PTT] button to make the

call, the LED indicator lights up red.

3. Hold the radio vertically 1 to 2 inches (2.5 to 5.0 cm) from your mouth

and then speak clearly into the microphone.

Note: If Talk Permit Function is enabled, wait for the Talk Permit Tone to

sound before speaking.

4. Release the [PTT] button to listen.

5. When the target radio responds, the LED lights up red.

6. If there is no voice activity for a predetermined period of time, the call

ends. The radio returns to the screen you were on prior to initiating

the call (RDRD4250 and RDR4280 only).

Or (RDRD4250 and RDR4280 only)

1. Turn the Channel Selector Knob to select the desired channel.

2. Press “ ” to access the menu.

3. Press “ ” or “ ” to navigate to the Contacts. Press “OK”.

4. Press “ ” to enter the Contacts List.

5. Press “ ” or “ ” to navigate to the desired Subscriber ID/

Alias. When highlighted, press the [PTT] button to make the call. The

LED lights up red.

6. Hold the radio vertically 1 to 2 inches (2.5 to 5.0 cm) from your mouth

and then speak clearly into the microphone.

Note: If Talk Permit Function is enabled, wait for the Talk Permit Tone to

sound before speaking.

7. Release the [PTT] button.

Making a Group or Private Call using One Touch Call Function

The One Touch Call allows you to make quick Group or Private Call

respectively to a predeﬁned Group or Private Subscriber ID/Alias. This

feature can be assigned to a short or long programmable function key

press. You can only have one alias or ID assigned to a One Touch Call

programmable function key. Your radio can have multiple One Touch

Call programmable function keys programmed.

1. Press the programmed One Touch Call programmable function key.

2. Press the [PTT] button to make a call. The LED lights up red.

3. Hold the radio vertically 1 to 2 inches (2.5 to 5.0 cm) from your mouth

and then speak clearly into the microphone.

Note: If Talk Permit Function is enabled, wait for the Talk Permit Tone to

sound before speaking.

4. Release the [PTT] button to listen. When the target radio responds,

the LED blinks green.

5. If there is no voice activity for a predetermined period of time, the call

ends. The radio returns to the screen you were on prior to initiating

the call (RDRD4250 and RDR4280 only).

Communications Systems

RDR42x0 Professional Digital

Two-Way Radios

INSTRUCTION MANUAL

Emergency Operation

An Emergency Alarm is used to indicate a critical situation. Your radio

supports 3 Emergency Alarms:

• Emergency Alarm

• Emergency Alarm with Call

• Emergency Alarm with Voice to Follow

Each alarm has the following types:

• Regular: Radio transmits an alarm signal and shows audio and/or

visual indicators.

• Silent: Radio transmits an alarm signal without any audio or visual

indicators. There will be no response (call) from the target radio until

you press the PTT button to initiate the call.

• Silent with Voice: Radio transmits an alarm signal and is able to

receive an incoming call, without any audio or visual indicators, until

you press the [PTT] button to initiate, or respond to the call.

Note: Only one Emergency Alarm can be programmed per channel.

ADVANCED FEATURES

Radio Check

If enabled, this feature allows you to determine if another radio is

active in your radio system without disturbing the user of that radio.

No audible or visual notiﬁcation is shown on the target radio. Only

RDR4250 and RDR4280 can initiate a Radio Check. To be able to

initiate a Radio Check, the feature must be enabled by your RCA

Communications Systems Dealer.

Note: This is a direct radio to radio feature and it is only applicable for

subscriber IDs/Aliases in digital mode.

Sending a Radio Check (RDR4250 and RDR4280 Only)

1. Press “ ” to access the menu.

2. Press “ ” to enter Contacts.

3. Press “ ” to enter Contacts List.

4. Press “ ” or “ ” to access the required subscriber ID/Alias

and press “ ” to select. Or press “ ” or “ ” to navigate

to Manual Dial, then press “ ” and input the subscriber ID.

5. Press “ ” to enter Control Services and press “ ” to select

Radio Check. Wait for acknowledgment.

6. The screen will display Radio Check, indicating that Radio Check is

in progress. The LED blinks in red.

7. If the target radio is active in the system, a tone sounds and the

display brieﬂy shows Target Available. If the target radio is not

active in the system, a tone sounds and the display shows Target

Not Available.

Note: Do not press the “ ” key. Pressing the “ ” key while the

radio is waiting for acknowledgment will terminate all retries and exits

Radio Check.

Initiating Remote Monitor (RDR4250 & RDR4280 only)

If enabled, this feature allows you to remotely monitor (listen) another

radio in your radio system without disturbing the user of that radio.

No audible or visual notiﬁcation is shown on the target radio. Only

RDR4250 and RDR4280 can initiate a Remote Monitor. To be able to

use the Radio Monitor feature, the feature must be enabled by your

RCA Communications Systems Dealer, in both the initiating radio and

the target radio.

1. Press “ ” to access the menu.

2. Press “ ” to enter Contacts.

3. Press “ ” to enter Contacts List.

4. Press “ ” or “ ” to access the required subscriber ID/Alias

and press “ ” to select. Or press “ ” or “ ” to navigate

to Manual Dial, then press “ ” and input the subscriber ID.

5. Press “ ” to enter Control Services and press “ ” to select

Remote Monitor. Wait for acknowledgment.

6. The screen will display Radio Monitor, indicating that Radio Monitor

is in progress. The LED blinks in red.

Initiating & Responding to Emergency Alarm

1. To initiate an Emergency Alarm, press the programmed Emergency

programmable function key (typically the top orange key). The LED

blinks in red.

2. (RDR4250 and RDR4280 Only) The display shows Sending Alarm,

the Group ID alternating with the Group Alias. The Emergency

Icon appears on the status bar of the display. When an Emergency

Alarm acknowledgment is received, an alert tone sounds and the

display shows Emergency Alarm Successful.

3. Depending on the settings programmed by your RCA

Communications Systems Dealer, you can press the [PTT] to talk

or your radio’s microphone is automatically activated, allowing you

to communicate with the target radios without pressing the [PTT]

button.

4. To Respond to an Emergency Alarm, press the “ ” key to stop

all Emergency Alarm received indications. Press [PTT] button to

initiate a call with the emergency initiating radio.

Exiting Emergency Mode

Your radio exits Emergency mode automatically when any of the

following occurs:

• Emergency Alarm acknowledgment is received (for Emergency

Alarm only).

• All retries to send the alarm have been exhausted.

• The Emergency is turned O by pressing the programmed

Emergency O programmable function key.

• Your radio is powered o

BAC K BAC K

Communications Systems

RDR42x0 Professional Digital

Two-Way Radios

INSTRUCTION MANUAL

7. The display shows Remote Monitor Successful or Remote Monitor

Failed.

8. If successful, the radio will start receiving audio from the monitored

radio for the duration of the programmed Remote Monitor time.

Once the timer expires, the radio sounds an alert tone and the

display shows Remote Monitor Ended. If the Remote Monitor is

unsuccessful, the radio repeats the attempt until the programmed

number of retries expires.

Contacts Settings (RDR4250, RDR4280 only)

Contacts provides an address-book capability on your radio. Each

entry corresponds to an ID/Alias that you can use to initiate a call.

Additionally, each entry can be associated with one of 3 types of calls:

Group Call, Private Call, All Call. Each entry within Contacts displays

the following information:

• Call Type

• Call Alias

• Call ID

Note: You can add, delete, or edit contacts from the Digital Contacts

list.

Group Call from Contacts (RDR4250, RDR4280 only)

1. Press “ ” to access the menu.

2. Press “ ” to enter Contacts.

3. Press “ ” to enter Contacts List. All entries are alphabetically

sorted.

4. Press “ ” or “ ” to select the desired Group ID/Alias.

5. Press [PTT] button to make the call. The LED lights up red. The

display shows the Group Call Icon and the Group ID/Alias.

6. Hold the radio vertically 1 to 2 inches (2.5 to 5.0 cm) from your

mouth and then speak clearly into the microphone.

Note: If Talk Permit Function is enabled, wait for the Talk Permit Tone

to sound before speaking.

7. Release the [PTT] button to listen.

8. When any user in the group responds, the LED lights up solid

green. The display shows the Group Call Icon, the Group ID/Alias,

and the calling Subscriber ID/Alias.

9. If there is no voice activity for a programmed period of time, the

call ends.

Private Call from Contacts (RDR4250, RDR4280 only)

1. Press “ ” to access the menu.

2. Press “ ” to enter Contacts.

3. Press “ ” to enter Contacts List. All entries are alphabetically

sorted.

4. Press “ ” or “ ” to select the desired Subscriber ID/Alias.

5. Press [PTT] button to make the call. The LED lights up red. The

display shows the Private Call Icon and the Subscriber ID/Alias.

6. Hold the radio vertically 1 to 2 inches (2.5 to 5.0 cm) from your

mouth and then speak clearly into the microphone.

Note: If Talk Permit Function is enabled, wait for the Talk Permit Tone

to sound before speaking.

7. Release the [PTT] button to listen.

8. When any user in the group responds, the LED lights up solid green.

The display shows the Private Call Icon, the Subscriber ID/Alias.

Alert Tone Settings

Activating and Deactivating Call Alert Tones for Private Calls

(RDR4250 and RDR4280 only)

Turn on or o the call alert tones for a received Private Call.

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” to navigate to Setting and press “ ” to

select.

3. Press “ ” or “ ” to navigate to Tone/Alerts and press “ ”

to select.

4. Press “ ” or “ ” to navigate to Individual Call and press

“ ” to select.

5. Press “ ” or “ ” to navigate to “On/O” and press “ ”

to select.

6. Press “ ” or “ ” to “On” or “O”.

Activating and Deactivating Call Alert Tones for Group Calls

(RDR4250 and RDR4280 only)

Turn on or o the call alert tones for a received Group Call.

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” to navigate to Setting and press “ ” to

select.

3. Press “ ” or “ ” to navigate to Tone/Alerts and press “ ”

to select.

4. Press “ ” or “ ” to navigate to Talkgroup Call and press

“ ” to select.

5. Press “ ” or “ ” to navigate to “On/O” and press “ ”

to select.

6. Press “ ” or “ ” to “On” or “O”.

Activating and Deactivating Call Alert Tones for Alert Calls

(RDR4250 and RDR4280 only)

Turn on or o the call alert tones for a received Private Call.

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” to navigate to Setting and press “ ” to

select.

3. Press “ ” or “ ” to navigate to Tone/Alerts and press “ ”

to select.

4. Press “ ” or “ ” to navigate to Alert Call and press “ ”

to select.

5. Press “ ” or “ ” to navigate to “On/O” and press “ ”

to select.

6. Press “ ” or “ ” to “On” or “O”.

Activating and Deactivating Call Alert Tones for Text Messages

(RDR4250 and RDR4280 only)

Turn on or o the call alert tones for a received Text Message.

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” to navigate to Setting and press “ ” to

select.

3. Press “ ” or “ ” to navigate to Tone/Alerts and press “ ”

to select.

4. Press “ ” or “ ” to navigate to Text Message and press

“ ” to select.

5. Press “ ” or “ ” to navigate to “On/O” and press “ ”

to select.

6. Press “ ” or “ ” to “On” or “O”.

9. If there is no voice activity for a programmed period of time, the

call ends.

Communications Systems

RDR42x0 Professional Digital

Two-Way Radios

INSTRUCTION MANUAL

Call History Features (RDR4250 and RDR4280 Only)

Your radio keeps track of all recent outgoing, answered, and missed

Private Calls. Use the Call History feature to view and manage recent

calls. You can store a Subscriber ID from the Call History to Contacts

or Delete it. The Call History list types are Missed, Answered and

Outgoing.

Note: When the Call List contains no entries, the display shows No

Records.

Text Message Features (RDR4250 and RDR4280 Only)

Your radio is capable to receive and send data such as a text messages

from/to another radio. The maximum text message length is 70

characters.

Receiving Text Message

When your radio receives a message, the display shows the Message

Icon as a notiﬁcation and the radio sounds an alert tone.

1. Press View to read the text message.

2. Press Ignore to disregard and read it later.

Managing Received Text Messages

Your radio can store the incoming text messages into an Inbox folder.

You can use the Inbox to manage your text messages. The following

options are supported:

• Reply

• Forward

• Detail

• Delete

Viewing a Text Message from the Inbox

1. Press “ ” to access Menu.

2. Press “ ” or “ ” to navigate to Messages and press “ ”

to select.

3. Press “ ” or “ ” to navigate to Inbox and press “ ” to

select.

4. Press “ ” or “ ” to navigate to Inbox List and press “ ”

to select, and press “ ” again to view the message.

5. Press “ ” to Reply, Forward, Detail or Delete the message.

Unread messages are indicated with a closed envelope icon. Read

messages are indicated with opened envelope icon.

Navigating to Messages

1. Press “ ” to access the menu.

2. Press “ ” or “ ” to navigate to Messages.

Note: Press Back button at any time to return to the previous screen.

Call Alert (RDR4250 and RDR4280 Only)

Call Alert enables you to alert a speciﬁc radio user to call you back

when they are able to do so. This feature is applicable for subscriber

IDs/Aliases only and is accessible through the menu via Contacts or

Manual Dial.

Accessing the Call History

Use the programmed Remote Monitor button.

1. Press “ ” to access the menu.

2. Press “ ” or “ ” to navigate to Call History and press “ ”

to select.

3. Press “ ” or “ ” to navigate to the desired list and press

“ ” to select. The most recent entry is displayed ﬁrst.

4. Use the “ ” or “ ” button to scroll through the list.

5. After locating the desired contact, press [PTT] to initiate a call.

Storing an Alias or ID from a Call List (RDR4250 and RDR4280 Only)

1. When viewing an entry from the Call History list press “ ” to

select.

2. Press “ ” or “ ” to navigate to the desired subscriber ID,

press “ ” to select.

3. Press “ ” or “ ” to navigate to Save, press OK to select.

4. Use the keypad to Input the desired Subscriber Alias, press “ ”

to Save.

5. The display shows Contact Saved.

Note: You can store an ID without an Alias.

Receiving and Responding to a Call Alert

When you receive a Call Alert:

1. You hear a repetitive Alert Tone.

2. On the display you see Call Alert. To respond to the Call Alert

directly, Press [PTT] button to make the call. The LED lights up red.

The display shows the Private Call Icon and the Subscriber ID/Alias.

3. Hold the radio vertically 1 to 2 inches (2.5 to 5.0 cm) from your

mouth and then speak clearly into the microphone.

Note: If Talk Permit Function is enabled, wait for the Talk Permit Tone

to sound before speaking.

4. Release the [PTT] button to listen.

5. To view the Subscriber ID/Alias of the calling radio, press “ ”. To

ignore the Alert Call press “ ”.

Deleting a Call from a Call List

1. While viewing an entry from the Call Log list press “ ” to select.

2. Press “ ” or “ ” to navigate to Delete.

3. Press “ ” and press “ ” or “ ” to navigate to Yes and

press “ ”. The display shows Deleted.

BAC K

Making a Call Alert from the Contact List (RDR4250, RDR4280 only)

1. Press “ ” to access the menu.

2. Press “ ” or “ ” to navigate to Contacts and press “ ”

to select.

3. Press “ ” or “ ” to navigate to Contacts List and press

“ ” to select.

4. Press “ ” or “ ” to navigate to Control Services.

5. Press “ ” or “ ” to ﬁnd the desired Subscriber ID/Alias and

press “ ” to select. For Manual Dial, press “ ” or “ ” to

the Manual Dial option and press “ ”. Use the keypad to input

the Subscriber ID and press “ ”.

6. Press “ ” or “ ” to navigate to Call Alert, then press “ ”.

7. The display shows Call Alert Icon.

8. The LED blinks in red when your radio is sending the Call Alert.

9. If the Call Alert acknowledgment is received, a tone sounds,

and the display shows Call Alert Successful. If the Call Alert

acknowledgment is not received, a tone sounds, and the display

shows Call Alert Failed.

Communications Systems

RDR42x0 Professional Digital

Two-Way Radios

INSTRUCTION MANUAL

Writing and Sending Text Message (RDR4280 Only)

1. Press “ ” to access the menu.

2. Press “ ” or “ ” to navigate to Message.

3. Press “ ” or “ ” to navigate to New Message and press

“ ” to select.

4. Use the keypad to type your message. Press “#” to enter space,

press “*” to delete the last character.

5. When done, press “ ” to send or save the text message.

6. Press “ ” or “ ” to navigate to Send and press “ ” to

select Send.

7. Press “ ” or “ ” to navigate to Contact List and press “ ”

to select it.

8. Press “ ” or “ ” to navigate to the desired Subscriber ID/

Alias or Group ID/Alias. Or Press “ ” or “ ” to navigate to

Manual Dial.

9. Press “ ” to send the text message.

10. If the message is sent successfully, a tone sounds, and the display

shows Success. If the message is not sent, a low tone sounds and

the display shows Failed. If the text message fails to send, the radio

returns to the home screen.

Sending a Quick Text Message (RDR4250 and RDR4280 Only)

Your radio stores a maximum of 50 Quick Text Messages as

programmed by your RCA Communications Systems Dealer. While

Quick Text Messages are predeﬁned, you can edit each message

before sending it.

1. Press “ ” to access the menu.

2. Press “ ” or “ ” to navigate to Message.

3. Press “ ” or “ ” to navigate to Quick Text and press “ ”

to select.

4. Press “ ” or “ ” to ﬁnd the desired Quick Text and press

“ ” to select.

5. Use the keypad to edit the message, if needed. Press “#” to enter

space, press “*” to delete a character.

6. Press “ ” when ready to send the message.

7. Press “ ” or “ ” to navigate to Send and press “ ” to

select Send.

8. Press “ ” or “ ” to navigate to Contact List and press “ ”

to select it.

9. Press “ ” or “ ” to navigate to the desired Subscriber ID/

Alias or Group ID/Alias. Or Press “ ” or “ ” to navigate to

Manual Dial.

10. Press “ ” to send the text message.

11. If the message is sent successfully, a tone sounds, and the display

shows Success. If the message is not sent, a low tone sounds, and

the display shows Failed. If the text message fails to send, the radio

returns to the home screen.

Note: Your RCA Communications Systems Dealer can program a

One Touch Access programmable function key to send a Quick Text

Message to a predeﬁned Subscriber ID/Alias or Group ID/Alias.

Managing Sent Text Message

Once a message is sent to another radio, it is saved in the Outbox.

The most recent sent text message is added to the top of the Outbox

List. The Outbox folder is capable for storing a maximum of thirty (30)

last sent messages. When the folder is full, the next sent text massage

automatically replaces the oldest text message in the folder.

Viewing Sent Text Messages

1. Press “ ” to access Menu.

2. Press “ ” or “ ” to navigate to Messages and press “ ”

to select.

3. Press “ ” or “ ” to navigate to Outbox and press “ ” to

select.

4. Press “ ” or “ ” to navigate to Outbox List and press “ ”

to select.

5. Press “ ” or “ ” to navigate to the desired message and

press “ ”.

Managing Failed-to-Send Text Messages

You can select one of the following options if the message fails to send.

• Resend

• Forward

• Detail

• Delete

Resending a Text Message

1. Once in Messages, press “ ” or “ ” to navigate to Outbox

and press “ ” to select.

2. Press “ ” or “ ” to navigate to Outbox List.

3. Press “ ” or “ ” to navigate to the desired message, press

“ ” to select and press “ ” to enter the Options menu.

4. Press “ ” or “ ” to navigate to Resend and Press “ ”

to resend the same message to the same Subscriber ID/Alias or

Group ID/Alias.

5. If the message is sent successfully, a tone sounds, and the display

shows Success. If the message is not sent, a low tone sounds, and

the display shows Failed. If the text message fails to send, the radio

returns to the home screen.

Forwarding a Text Message

1. Once in Messages, press “ ” or “ ” to navigate to Outbox

and press “ ” to select.

2. Press “ ” or “ ” to navigate to Outbox List.

3. Press “ ” or “ ” to navigate to the desired message, press

“ ” to select and press “ ” to enter the Options menu.

4. Press “ ” or “ ” to navigate to Forward and Press “ ”

to forward the same message to the same Subscriber ID/Alias or

Group ID/Alias.

5. If the message is sent successfully, a tone sounds, and the display

shows Success. If the message is not sent, a low tone sounds, and

the display shows Failed. If the text message fails to send, the radio

returns to the home screen.

OK OK

Communications Systems

RDR42x0 Professional Digital

Two-Way Radios

INSTRUCTION MANUAL

You can select one of the following options while viewing a sent

message:

• Resend

• Forward

• Detail

• Delete

To perform any of the functions follow the steps described in section

Managing Failed-to-Sent Text Messages.

Deleting All Sent Text Messages from Sent items

1. Press “ ” to access Menu.

2. Press “ ” or “ ” to navigate to Messages and press “ ”

to select.

3. Press “ ” or “ ” to navigate to Outbox and press “ ” to

select.

4. Press “ ” or “ ” to navigate to Delete All and press “ ”

to select.

5. The display shows Delete All?, press “ ” to conﬁrm. The display

shows Success.

Deleting All Text Messages from the Inbox

1. Press “ ” to access the menu.

2. Press “ ” or “ ” to navigate to Messages and press “ ”

to select.

3. Press “ ” or “ ” to navigate to Inbox and press “ ” to

select.

4. Press “ ” or “ ” to navigate to Delete All and press “ ”

to select.

5. The display shows Delete All?, press “ ” to conﬁrm. The display

shows Success.

Note: When you select the Inbox and it contains no text messages, the

display shows Inbox Empty.

Encryption

If enabled and programmed into your radio, this feature helps to prevent

eavesdropping by unauthorized users on a channel, using software-

based encryption solution. The signaling and user identiﬁcation

portions of a transmission are not encrypted. Your radio must have

encryption enabled on the channel to send an encrypted transmission,

although it is not required for receiving encrypted transmission. Your

radio supports two types of encryption:

• Basic Encryption

• PRODIGI Advanced Encryption

• DMRA ARC4 Encryption

Only ONE encryption type can be assigned to your radio.

To decode an encrypted call or data transmission, your radio must be

programmed to have the same encryption key (for Basic Encryption),

OR the same Key Value of up to 18 characters for PRODIGI Advanced

Encryption as the transmitting radio.

If your radio receives an encrypted call that is of a dierent encryption

key, OR a dierent Key Value and Key ID, you will either hear a garbled

transmission (Basic Encryption) or radio’s audio will be muted (PRODIGI

Advanced Encryption). The LED lights up solid green while the radio is

receiving an encrypted transmission.

Note: Encryption is available only in digital mode. The feature must

be enabled and programmed by your RCA Communications Systems

Dealer.

Replying to a Text Message from the Inbox

1. Press “ ” to access Menu.

2. Press “ ” or “ ” to navigate to Messages and press “ ”

to select.

3. Press “ ” or “ ” to navigate to Inbox and press “ ” to

select.

4. Press “ ” or “ ” to select Inbox List and press “ ” to select.

5. Press “ ” to navigate to the desired message and press “ ”

to select. Press “ ” again to enter the Options Menu.

You can select one of the following options if the message:

• Reply

• Forward

• Detail

• Delete

6. Press “ ” or “ ” to navigate to Reply and press “ ” to

select.

7. Press “ ” or “ ” to navigate to New Message or Quick Text

and press “ ” to select. Depending on your choice, use the

keypad to write your message or press “ ” or “ ” to navigate

to the desired Quick Text Message and press “ ” to select. If

you’ve selected a Quick Text Message you can use the keypad to

edit your message, if needed.

8. Press “ ” to conﬁrm.

9. Press “ ” to Send.

10. If the message is sent successfully, a tone sounds, and the display

shows Success. If the message is not sent, a low tone sounds, and

the display shows Failed. If the text message fails to send, the radio

returns to the home screen.

Making an Encrypted Call

Your radio may have a mix of encrypted and unencrypted channels. To

make an encrypted call:

1. Using the channel selector knob, switch to an encrypted channel.

2. When on the desired channel, press the [PTT] button to make the

call, the LED indicator lights up red.

3. Hold the radio vertically 1 to 2 inches (2.5 to 5.0 cm) from your

mouth and then speak clearly into the microphone.

Note: If Talk Permit Function is enabled, wait for the Talk Permit Tone

to sound before speaking.

4. Release the [PTT] button to listen.

5. When the target radio responds, the LED lights up red.

6. If there is no voice activity for a predetermined period of time,

the call ends. The radio returns to the screen you were on prior to

initiating the call (RDRD4250 and RDR4280 only).

OK OK

Communications Systems

RDR42x0 Professional Digital

Two-Way Radios

INSTRUCTION MANUAL

Turning Encryption On/O

Encryption can be programmed to turn on automatically and can

be programmed without the ability to be turned o. It can also be

programmed to be controlled manually. If your radios is set for manual

control of the encryption feature , you may turn the encryption On/

O using the pre-programmed by your RCA Communications Systems

dealer long or short press function key or you may use the radio menu

(RDR4250 and RDR4280 only):

1. Press “ ” to access to the menu.

2. Press “ ” or “ ” to navigate to Settings

3. Press “ ” or “ ” to navigate to Radio Settings.

4. Press “ ” or “ ” to navigate to Encryption and press “ ”

to select.

5. Press “ ” or “ ” to Enable to turn Encryption On or Disable

to turn Encryption O. If successful, the radio displays Success.

Dual Tone Multi Frequency (DTMF)

The Dual Tone Multi Frequency (DTMF) feature allows the radio to

operate in a radio system with an interface to telephone or other DTMF

based systems. DTMF Codes can be programmed into the radio by

your RCA Communications Systems dealer. DTMF receive/transmit

feature has four optional modes with 32 encode groups with up to

30 characters per group. To use this feature, your radio must have

an access code, which is system dependent. Please contact with your

RCA Communications Systems dealer or system administrator for

more information.

To initiate a DTMF call:

1. Press and hold PTT button.

2. Enter the desired number.

Note: You can turn o the DTMF tone by disabling all radio tones and

alerts.

Radio Enable/Disable (RDR4250 and RDR4280 Only)

The Radio Enable/Disable feature allows you to enable or disable

any radio within your system. For example, you may want to disable a

stolen radio, to prevent the thief from using it, then enable that radio

once it is recovered.

Note: The Radio Disable/Enable feature requires the radio in your

system to have this function enabled. You can only Enable/Disable

a radio that is within communication range. Check with your RCA

Communications Systems Dealer or system administrator for more

information.

Scanning

When a scan is initiated, your radio cycles through the programmed

scan list for the current channel looking for voice activity. The LED

blinks orange and you see the Scan icon on the display (RDR4250 and

RDR4280 only).

There are two methods to initiating scanning:

• Manual Scan: Initiate scanning manually using the pre-

programmed Scan ON/OFF programmable function key. This must

be programmed by your RCA Communications Systems Dealer.

You can also use the radio menu as described in the Starting and

Stopping Scan section (RDR4250 and RDR4280 Only). When scan

is initiated, your radio will look for and detect matching activity

on all channels / groups included in the scan list (see Scan Lists

section for more information).

• Auto Scan: Your radio automatically starts scanning when you

select a channel / group that has Auto Scan enabled. Starting and

Stopping Scan Press the programmed Scan side button to start or

stop the Scan. OR - Follow the procedure below (RDR4250 and

RDR4280 Only):

Radio Disable: The radio receive / transmit functions become disabled

after the radio receives the Radio Disable code. In order to initiate

Radio Disable you must have a radio a model with a display (RDR4250

or RDR4280). To send a Radio Disable code:

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” key to navigate to Contacts and press

“ ” to select.

3. Press “ ” or “ ” key to navigate to the desired Subscriber

ID/Alias and press “ ” to select. You may also press “ ” or

“ ” key to navigate to Manual Dial, press “ ”, input the

Subscriber ID and press “ ” to select.

4. Press “ ” or “ ” to navigate to “Control Services and press

“ ” to select.

Radio Enable: The Radio receive / transmit functions become enabled,

if the radio was previously in Disabled status, after the radio receives

the Radio Enable code. In order to initiate Radio Enable you must have

a radio model with a display (RDR4250 or RDR4280). To send a Radio

Enable code:

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” key to navigate to Contacts and press

“ ” to select.

3. Press “ ” or “ ” key to navigate to the desired Subscriber

ID/Alias and press “ ” to select. You may also press “ ” or

“ ” key to navigate to Manual Dial, press “ ”, input the

Subscriber ID and press “ ” to select.

4. Press “ ” or “ ” to navigate to Control Services and press

“ ” to select.

5. Press “ ” or “ ” key to navigate to Radio Enable, then press

“ ” to select.

6. Wait for acknowledgment.

7. If successful, a tone sounds, and the display shows Success. If

failed, a low tone sounds, and the display shows Failed.

Starting and Stopping Scan

Press the programmed Scan side button to start or stop the Scan. OR –

Follow the procedure below (RDR4250 and RDR4280 Only):

1. Use the Channel Selector Knob to select a channel programmed

with a scan list.

2. Press “ ” to access the menu.

3. Press “ ” or “ ” to navigate to Scan and press “ ” to select.

4. Press “ ” or “ ” to navigate to Scan Switch and press “ ”

to select.

5. Press “ ” or “ ” to navigate to ON or OFF and press “ ”

to select.

5. Press “ ” or “ ” key to navigate to Radio Disable, then press

“ ” to select.

6. Wait for acknowledgment.

7. If successful, a tone sounds, and the display shows Success. If

failed, a low tone sounds, and the display shows Failed.

Communications Systems

RDR42x0 Professional Digital

Two-Way Radios

INSTRUCTION MANUAL

6. The display shows Turned O if you stop the scan or the display

shows Turned On if you start the scan.

7. Press “ ” to return to the main menu.

8. The LED blinks orange and the Scan Icon is displayed when Scan is

in progress. The LED turns o and the Scan icon disappears when

Scan is stopped.

BAC K

Responding to a Scan

During scanning, your radio stops on any channel / group where

matching activity is detected. After the transmission is over the radio

remains on the active channel for a programmed time known as “Hang

Time” (the Hand Time is adjustable and must be programmed by your

RCA Communications Systems dealer).

1. Press the [PTT] button during “Hang Time” to respond to the call.

The LED lights up red.

2. Release [PTT] button to listen.

Note: If you do not respond within the “Hang Time” period, the radio

will resume scanning.

Deleting a Nuisance Channel

If a channel continually generates unwanted calls or noise (termed

a “Nuisance” Channel), you can temporarily remove the unwanted

channel from the scan list.

Note: This capability does not apply to the channel designated as the

Selected Channel. This feature is not accessible through the menu.

1. When your radio stops on an unwanted or nuisance channel, press

the programmed Nuisance Channel Delete programmable function

key until you hear a tone.

2. Release the programmed Nuisance Channel Delete programmable

function key. The nuisance channel is deleted.

Restoring a Nuisance Channel

To restore the deleted nuisance channel, restart the radio by powering

it o powering it back on, or restart the scanning (see Starting and

Stopping Scanning section).

Radio Settings (RDR4250 and RDR4280 Only)

Keypad Locked and Keypad Unlocked

You can lock your radio keypad to avoid an inadvertent key entry.

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” to navigate to Settings and press “ ”

to select.

3. Press “ ” or “ ” to navigate to Radio Settings and press

“ ” to select.

4. Press “ ” or “ ” to navigate to Keypad Lock and press “ ”

to select.

5. Press “ ” or “ ” to select On. The display shows “Keypad

Locked”.

To unlock the keypad, press “ ” then press [*] button. The display

shows Keypad Unlocked and returns to the Home screen.

Turning Keypad Tones On or O

You can enable or disable keypad tones if needed.

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” to navigate to Settings and press “ ”

to select.

3. Press “ ” or “ ” to navigate to Radio Settings and press

“ ” to select.

4. Press “ ” or “ ” to navigate to Tone/Alerts and press “ ”

to select.

5. Press “ ” or “ ” to navigate to Keypad Tone and press

“ ” to select.

6. Press “ ” or “ ” to Enable or Disable the keypad tone.

Scan Lists

Scan lists are created and assigned to individual channels/groups. The

radio scans for activity by cycling through the channel/group speciﬁed

in the scan list for the current channel/group. The RDR4220 radio has

32 scan lists with up to 32 members each and the RDR4250/4280

has 250 scan lists with 32 members each. Each scan list supports a

mixture of both analog and digital channels. You can add, delete, or

prioritize channels by editing the scan lists.

Viewing an Entry in the Scan List (RDR4250 and RD4280 Only)

1. Use the Channel Selector Knob to select a channel programmed

with a scan list.

2. Press “ ” to access the menu.

3. Press “ ” or “ ” to navigate to Scan and press “ ” to select.

4. Press “ ” or “ ” to navigate to Scan Lists, press “ ” to

select.

5. Press “ ” or “ ” to select the desired Scan List and press

“ ” to select. Press “ ” or “ ” to select View/Edit and

press “ ” to view or edit the channel members.

Note: If set as priority, the Priority icon appears left of the channel

member Number/Alias, indicating whether the member is Priority 1

or Priority 2 channel. You cannot have multiple Priority 1 or Priority 2

channels in the same scan list. There is no Priority icon if priority is set

to None.

Setting the Power Level

You can adjust your radio power setting to high or low for each channel.

Press the programmed Power Level programmable function key to

toggle the transmit power level between high and low. You may also

use the radio menu (RDR4250 and RDR4280 Only) by following the

process outlined below:

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” to navigate to Settings and press “ ”

to select.

3. Press “ ” or “ ” to navigate to Radio Settings and press

“ ” to select.

4. Press “ ” or “ ” to navigate to Power Level and press “ ”

to select.

5. Press “ ” or “ ” to select the desired power level. Once the

level is selected the display shows “Success”.

6. Press the “ ” button to return to the home screen. The display

shows the Power Level icon, “H” for High Power and “L” for Low

Power.

BAC K

Communications Systems

RDR42x0 Professional Digital

Two-Way Radios

INSTRUCTION MANUAL

Controlling the Display Backlight (RDR4250 and RDR4280)

You can enable or disable the radio display backlight as needed. The

setting also aects the Menu navigation buttons and keypad backlight.

Press the programmed Backlight programmable function key to toggle

the backlight settings. You may also use the radio menu by following

the process outlined below:

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” to navigate to Settings and press “ ”

to select.

3. Press “ ” or “ ” to navigate to Radio Settings and press

“ ” to select.

4. Press “ ” or “ ” to navigate to Backlight and press “ ”

to select.

5. Press “ ” or “ ” to select one of the following options:

• O

• On

• Timed

6. The display shows “Success”.

Note: The display backlight and keypad backlight automatically turn

o if the LED indicator is disabled.

Channel Display (RDR4250 and RDR4280)

Deﬁnes if the radio shows the channel name or frequency on the

display.

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” to navigate to Settings and press “ ”

to select.

3. Press “ ” or “ ” to navigate to Radio Settings and press

“ ” to select.

4. Press “ ” or “ ” to navigate to Channel Display and press

“ ” to select.

5. Press “ ” or “ ” to select Name or Frequency, press “ ”

to select

6. The display shows “Success”.

Controlling the Display Brightness (RDR4250 and RDR4280)

You can control the display brightness depending to the environment

you are using your radio.

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” to navigate to Settings and press “ ”

to select.

3. Press “ ” or “ ” to navigate to Radio Settings and press

“ ” to select.

4. Press “ ” or “ ” to navigate to Brightness and press “ ”

to select.

5. Press “ ” or “ ” to adjust to the desired display brightness.

6. The display shows “Success”.

Switching Day/Night Mode

You can switch the display to Day or Night mode according to your

need. This automatically adjust the display brightness to Day/Night

preset levels.

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” to navigate to Settings and press “ ”

to select.

3. Press “ ” or “ ” to navigate to Radio Settings and press

“ ” to select.

4. Press “ ” or “ ” to navigate to Day/Night Mode and press

“ ” to select.

5. Press “ ” or “ ” to switch to Day Mode or Night Mode and

press “ ” to select.

6. The display shows “Success”.

Man Down

Man Down is an optional feature. If the feature is not activated in the

radio, contact your RCA Communications Systems Dealer.

Note: Your radio must be programmed by your RCA Communications

Systems dealer according your requirements to allow you to eciently

use the Man Down feature.

This feature enables Man Down function in the radio. Man Down

initiates an emergency alarm if the radio is in a position at a predeﬁned

angle for a predeﬁned period of time and there has been no actions

taken by the user during the predeﬁned time. Man Down is radio-

wide feature. To Enable/Disable the Man Down feature press the

programmed Man Down On/O programmable function key to toggle

Man Down On and Man Down O. You may also use the radio menu by

following the process outlined below:

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” to navigate to Settings and press “ ”

to select.

3. Press “ ” or “ ” to navigate to Radio Settings and press

“ ” to select.

4. Press “ ” or “ ” to navigate to Man Down and press “ ”

to select.

5. Press “ ” or “ ” to Enable or Disable, press “ ” to select.

6. The display shows “Success”.

Lone Worker

Lone Worker is an optional feature. If the feature is not activated in the

radio, contact your RCA Communications Systems Dealer.

Note: Your radio must be programmed by your RCA Communications

Systems dealer according your requirements to allow you to eciently

use the Lone Worker feature.

This feature enables Lone Worker function in the radio. Lone Worker

gives a tone as a reminder at regular intervals to which the radio user

needs to respond to by pressing the PTT button. If the worker fails to

respond, within the pre-deﬁned time, the radio initiates an emergency

alarm. Lone Worker is radio-wide feature. Lone Worker is radio-

wide feature. To Enable/Disable the Lone Worker feature press the

programmed Man Down On/O programmable function key to toggle

Lone Worker On and Lone Worker O. You may also use the radio

menu by following the process outlined below:

Communications Systems

RDR42x0 Professional Digital

Two-Way Radios

INSTRUCTION MANUAL

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” to navigate to Settings and press “ ”

to select.

3. Press “ ” or “ ” to navigate to Radio Settings and press

“ ” to select.

4. Press “ ” or “ ” to navigate to Lone Worker and press “ ”

to select.

5. Press “ ” or “ ” to Enable or Disable, press “ ” to select.

6. The display shows “Success”.

Squelch Level (Analog Mode Only)

You can adjust your radio squelch level to ﬁlter out unwanted calls

with low signal strength or channels that have a higher than normal

background noise.

Settings: Normal is the default level. Tight may help to ﬁlter out

(unwanted) calls and / or background noise. However, calls from radio

within your system that are in very remote locations may also be

ﬁltered out.

Press the programmed Squelch On/O programmable function key

to turn Squelch On or O. You may also adjust the Squelch Level

through the radio menu (RDR4250 and RDR4280 Only) by following

the process outlined below:

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” to navigate to Settings and press “ ”

to select.

3. Press “ ” or “ ” to navigate to Radio Settings and press

“ ” to select.

4. Press “ ” or “ ” to navigate to Squelch Level and press

“ ” to select.

5. Press “ ” or “ ” to choose one of the followings and press

“ ” to select.

• Open

• Normal

• Tight

6. The display shows “Success”.

Tones/Alerts

The Tones/Alerts menu allows you to preset or customize your radio

audible alerts and tones for the functions listed below. You can Enable

or Disable each one of them individually or customize the tone from

the tone list. The settings are radio-wide and aect all radio operating

modes.

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” to navigate to Settings and press “ ”

to select.

3. Press “ ” or “ ” to navigate to Radio Settings and press

“ ” to select.

4. Press “ ” or “ ” to navigate to Tones/Alerts and press “ ”

to select.

5. Press “ ” or “ ” to navigate to the desired function and press

“ ” to select.

• Radio Silent

• Keypad tones

• Text Message

• Private Call

• Group Call

• Alert Call

• Power Up

• Low Battery

• Annunciation

• Scan

• TX Inhibit

• Lone Worker

• TOT

6. Press “ ” to select.

7. Press “ ” or “ ” to navigate to On/O or Tone List and press

“ ” to select.

8. Press “ ” or “ ” to navigate to On, O or the desired Tone

and press “ ” to select.

9. The display shows “Success”.

Turning the Radio Tones/Alerts On/O

You can enable and disable all radio tones and alerts (except for the

incoming Emergency alert tone) if needed. Press the programmed All

Tones/Alerts On/O programmable function key to toggle All Tones/

Alerts On or O. You may also adjust the Tones/Alerts through the

radio menu (RDR4250 and RDR4280 Only) by following the process

outlined below:

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” to navigate to Settings and press “ ”

to select.

3. Press “ ” or “ ” to navigate to Radio Settings and press

“ ” to select.

4. Press “ ” or “ ” to navigate to Tones/Alerts and press

“ ” to select.

5. Press “ ” or “ ” to Enable or Disable All Tones/Alerts and

press “ ” to select.

6. The display shows “Success”.

Turning the LED Indicator On/O (RDR4250 and RDR4280 Only)

The LED Indicator shows the operational status of your radio. To turn

the LED Indicator On/O follow the process outlined below:

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” to navigate to Settings and press “ ”

to select.

3. Press “ ” or “ ” to navigate to Radio Settings and press

“ ” to select.

4. Press “ ” or “ ” to navigate to LED Indicator and press

“ ” to select.

5. Press “ ” or “ ” to navigate to the LED Indicator Enable or

Disable, press “ ” to select.

6. The display shows “Success”.

Note: The display backlight, buttons and keypad backlight are

automatically turned o if the LED indicator is disabled.

Communications Systems

RDR42x0 Professional Digital

Two-Way Radios

INSTRUCTION MANUAL

Radio PIN Lock (RDR4250 and RDR4280 Only)

For security purposes you can lock your radio with the PIN lock feature.

To turn the PIN On/O follow the process outlined below:

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” to navigate to Settings and press “ ”

to select.

3. Press “ ” or “ ” to navigate to Radio Settings and press

“ ” to select.

4. Press “ ” or “ ” to navigate to PIN and press “ ” to select.

5. Press “ ” or “ ” to navigate to On/O and press “ ” to

select.

6. To turn On the PIN lock, select “On” and enter a 6 digit PIN. When

done press “ ”. To turn O the PIN lock, select “O”.

7. The display shows “Success”.

To change the PIN, follow the process outlined below:

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” to navigate to Settings and press “ ”

to select.

3. Press “ ” or “ ” to navigate to Radio Settings and press

“ ” to select.

4. Press “ ” or “ ” to navigate to PIN and press “ ” to select.

5. Press “ ” or “ ” to navigate to Change Pass. and press

“ ” to select.

6. Enter the current PIN ﬁrst and press “ ”. Then enter a new 6

digit PIN and press “ ”, enter the new PIN again to conﬁrm and

press “ ”.

7. The display shows “Success”.

Turning Voice Operating Transmission (VOX) Feature On/O

This feature allows you to initiate a hands-free voice activated call

on a programmed channel. The radio automatically transmits, for a

programmed period of time, whenever the microphone on the VOX-

capable accessory detects a voice.

Note: This feature must be programmed by your RCA Communications

Systems Dealer to enable your radios to use this function. It is NOT

advised to use VOX in loud and noisy environments, around heavy

machinery or when close by to other radio users.

If VOX is programmed by your RCA Communications Systems Dealer

you may manually turn it On or O. Press the programmed VOX

programmable function key to toggle VOX On/O. You may also

use the radio menu (RDR4250 and RDR4280 Only) by following the

process outlined below:

1. Press “ ” or “ ” to navigate to Settings and press “ ”

to select.

2. Press “ ” or “ ” to navigate to Radio Settings and press

“ ” to select.

Talkaround

This feature toggles between Repeater and Talkaround (Direct) mode.

If you are using a repeater and your repeater is not operating or you

are out of range, you can continue to communicate during that time

directly with other radios within your group. This is called “Talkaround”.

Press the programmed Repeater / Talkaround programmable function

key to toggle between Talkaround and Repeater modes.

Note: The Talkaround setting is retained even after powering down.

3. Press “ ” or “ ” to navigate to VOX and press “ ” to select.

4. Press “ ” or “ ” to navigate to Enable or Disable and press

“ ” to select.

5. The display shows “Success”.

Note: Pressing the PTT button during hands-free radio operation will

disable VOX.

Function Keys (RDR4250 and RDR4280 Only)

This feature allows you to assign and control radio features and

functions to the programmable function keys.

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” to navigate to Settings and press “ ”

to select.

3. Press “ ” or “ ” to navigate to Radio Settings and press

“ ” to select.

4. Press “ ” or “ ” to navigate to Function Keys and press

“ ” to select.

5. Press “ ” or “ ” to navigate to the desired function key and

press “ ” to select.

• Top Key (TK)

• Channel Knob

• Side Key 1 (SK1)

• Side Key 2 (SK2)

• Side Key 3 (SK3)

• PTT

• FK1 Key (-)

• FK2 Key (- -)

6. Press “ ” or “ ” to Enable or Disable and press “ ” to

conﬁrm.

7. If Enable is selected, press “ ” or “ ” to select the desired

function and press “ ” to conﬁrm.

8. The display shows “Success”.

Communications Systems

RDR42x0 Professional Digital

Two-Way Radios

INSTRUCTION MANUAL

Keypad Mode (RDR4250 and RDR4280 Only)

This feature allows you to deﬁne the radio behavior upon press of any

keypad alphanumeric key when your radio is on the home screen. The

options are:

• Disable – the keypad will be inactive.

• Manual Dial – you can dial a subscriber ID/Alias directly from the

home screen.

• One Touch Call – you can select an assigned by you RCA

Communications Systems Dealer One Touch Call.

• Channel Switch – you can enter a channel number (within the

current Zone) to switch to that channel without turning the Channel

Knob.

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” to navigate to Settings and press “ ”

to select.

3. Press “ ” or “ ” to navigate to Radio Settings and press

“ ” to select.

4. Press “ ” or “ ” to navigate to Keypad Mode and press

“ ” to select.

5. Press “ ” or “ ” to set one the following options:

• Disable

• Manual Dial

• One Touch Call

• Channel Switch

6. The display shows “Success”.

Vibration (None I.S. (Intrinsically Safe) Models Only)

You may set you radio to Vibrate when it receives a Private Call,

Group Call, Alert Call or a Text Message. You may enable or disable

Vibration as needed by pressing the programmed Vibration On/O

programmable function key to toggle Vibration On/O. You may also

use the radio menu (RDR4250 and RDR4280 Only) by following the

process below.

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” to navigate to Settings and press “ ”

to select.

3. Press “ ” or “ ” to navigate to Radio Settings and press

“ ” to select.

4. Press “ ” or “ ” to navigate to Vibration and press “ ”

to select.

5. Press “ ” or “ ” to Enable or Disable vibration.

6. The display shows “Success”.

General Radio Information (RDR4250 and RDR4280 Only)

Your radio contains information of the following:

• Serial Number

• Radio ID

• Radio Alias

• Model

• Frequency Range

• Firmware Version

• Hardware Version

• Database Version

• Bootloader Version

• Language Version

• Picture Version

• Last Prg. Date

To access the information on your radio, follow below steps:

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” to navigate to Settings and press “ ”

to select.

3. Press “ ” or “ ” to navigate to Radio Info and press “ ”

to select.

GPS Settings (Digital Mode Only)

GPS is an optional feature. A location reporting feature, which allows

the radio to obtain its current location from available satellites. The

coordinates then can be sent to a designated Dispatch console for

tracking purposes.

Note: This feature can only work when the radio is used outdoors.

At least one RCA Communications Systems compatible PC Dispatch

Console, serving as Target Contact, is needed to decode and display

properly the radio unit location coordinates. For more information

contact your RCA Communications Systems Dealer.

If GPS is enabled and programmed by your RCA Communications

Systems Dealer you may manually turn it On or O. Press the

programmed GPS programmable function key to toggle GPS On/O.

You may also use the radio menu (RDR4250 and RDR4280 Only) by

following the process outlined below:

1. Press “ ” to access the main menu.

2. Press “ ” or “ ” to navigate to Accessories and press “ ”

to select.

3. Press “ ” or “ ” to navigate to GPS and press “ ” to select.

4. Press “ ” or “ ” to select one of the following options:

• GPS On/O

• Position

• GMT

5. To turn GPS On/O, press “ ” or “ ” to navigate to On or O

and press “ ” to select.

6. The display shows “Success”.

Communications Systems

RDR42x0 Professional Digital

Two-Way Radios

INSTRUCTION MANUAL

RCA and the RCA logo are trademarks of Technicolor SA and are used under license. All other trademarks are the property of their respective owners. © 2020 RCA Communications Systems. All rights reserved.

www.rcacommunicationssystems.com

[email protected]

(877) 822-2915

Created in U.S.A.

Communications Systems

CARE AND CLEANING

• Do not directly handle the radio by its antenna or external

microphone. Damage due to improper handling and misuse is NOT

covered under the warranty.

• Do not place the radio in a dusty or dirty environment.

• Clean the radio with a lint-free cloth moistened with clean water

and/or a mild dishwashing liquid to remove dirt, grease and dust.

• Avoid exposing the radio to corrosives, solvents, or spirits.

• Avoid exposing the radio and it’s battery to direct sunlight for

prolonged periods of time.

Symptom Solution

Radio will not power on

a. The battery needs charging. Recharge the battery or replace it with

a fresh one.

b. The battery is not properly installed. Remove the battery and

reattach it.

The operating time is noticeably shorter than normal even though

the battery is properly charged.

a. The battery has worn out; it is time to buy a new battery.

b. The battery is not fully charged. Make sure that the battery is

removed after LED indicator has turned green.

Cannot talk to or hear transmissions from your group members

a. Make sure that your radio operates on the same channel and / or

has the same CTCSS/CDCSS settings as your group members.

b. Make sure you are within their communication range.

Radio is on, but you cannot hear voice transmissions or they are not

very loud

a. Turn the volume control knob to its maximum volume.

b. Return the radio to your dealer to check for microphone damage.

TROUBLESHOOTING

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