Audiovox FRS-3000PK User manual

FRS 3000-PK
SERVICE MANUAL
2-WAY RADIO, Base Station
OCTOBER 19, 2001

1. GENERAL
1.1 GENERAL
This equipment, FRS 3000-PK is called 2 way portable handheld radios.
The frequency range is 462 ~ 467MHz, UHF operating Channels for international 2
way radio. Also it has a 38 CTCSS feature to get the clear communication without
interference. FRS 3000-PK has 10 NOAA weather channel and weather alert feature.
1.2 CHARACTERISTIC
a) All active device in this radio is composed of semiconductor and
high density IC.
b) To design this radio in compact and weight approximately 140g
c) CPU of this equipment is H8/3802 from HITACHI
d) It’s power can operate by use of Adaptor
1.3 COMPOSITION
This radio is composed of following.
a) Transceiver (W/Antenna)
b) Belt clip

2. SPECIFICATION
2.1 GENERAL SPECIFICATIONS
a) Frequency range : 462.5625 ~ 467.7125 MHz
b)Output Impedance : 50ΩUnbalanced
c) Modulation Type : 9K0F3E
d)Communication Mode : Half duplex
e) Channel Capacity : 14 channel
f) Channel Spacing : 12.5 Khz
g)Power : 9.0V Adaptor
h)Operating Temperature : -20°C ~ +60°C
i) Dimension : 128(H) x 155(W) x 50(D)
j) Weight : 140g
2.2 ELECTRICAL SPECIFICATION
a) TRANSMITTER
1) Output power : Max . 500mW
2) Frequency Stability : ±2.5 ppm(-20°C ~ +60°C)
3) Modulation Method : FM
4) Oscillation Method : PLL SYNTHESIZER
5) Max. Frequency Deviation : <±2.5 kHz (with tone)
6) Cooling Method : air-cooling Method
7) Spurious Emission : <-60dB
8) FM Hum/Noise : >-40dB(1kHz 60% modulation, w/CCITT)
9) Distortion : <5% (1kHz 60% modulation)
10) Tx Audio Response : 6dB / OCT ±3dB Pre-Emphasis(300Hz ~ 3kHz)
b) RECEIVER
1) Receiver Method : Double Super Heterodyne
2) Receiver Sensitivity : < 0.28uV(12dB SINAD) : > -118dBm
3) Squelch Sensitivity : -120dBm ~ -130dBm(AUDIO On/Off Point)
4) Bandwidth : >8kHz (6dB ATT point)
5) Selectivity : <-60 dB (12.5kHz)
6) Local Frequency Stability : ±2.5ppm(-20°C ~ +60°C)
7) Spurious Response : >45 dB
8) Audio output : 200mW (Internal 8Ωload THD 10%)
9) Distortion : <5% (1kHz 60% Modulation)
10) RxAudio Response : 6dB/OCT +1/-10dB De-Emphasis(300Hz~2.5kHz)
11) S/N Radio : <40 dB(1kHz 60% Modulation)
12) IF : 1’st IF --- 21.7MHz
2’nd IF --- 450kHz
13) Local Frequency : 1’st Local Frequency --- fc –21.7MHz
2’nd Local Frequency --- 21.250MHz

3. OPERATION
3.1 ICONS on LCD
1) Monitor indicator : Appears when the CTCSS isn’t in use and squelch is open.
2) Key lock indicator : Indicates that the key lock function is in use.
3
) Beep ON/OFF indicator : Appears while key tone is in use.
4) Roger On/Off indicator : Appears while Roger tone is in use.
5) Receive signal indicator : Appears when receiving signal or squelch noise is
existing.
6) ID indicator : Appears when the ID function is in use.
7) Weather mode indicator : Icon will be on steady when in the weather band
mode. The Icon will blink in every 2 seconds when in the FRS mode with the
alert active.
8) Channel readout : Shows the current channel number.
9) CTCSS readout : Shows the operating CTCSS frequency or code.
10) SCAN indicator : Indicates that scan is enabled.
11) CTCSS indicator : Appears when the CTCSS function is in use.
12) Dual Watch indicator : Appears when the Dual Watch function is in use.
13) Out Of Range indicator : Appears when the Out Of Range function is in use.
14) VOX (Voice Activated Transmit) Indicator : Turning on the
power while pressing PTT button activates VOX function.

3.2 Key Function
1) PTT switch : Push and hold to transmit ; release to receive.
2) Monitor : Press and hold this key for over 2 seconds to enable the receive
CTCSS feature.
3) Up/Down key : In the stand-by mode, Pressing this button will increment or
decrement the listening volume. When in function edit mode,
this button will be used to adjust the unit.
4) Scan / Lock key : Push this key to momentarily to enable or disable the
scan. Press and hold this key for over 2seconds to lock or
unlock keypad.
5) Charger key : This base station is set up in charge protection mode to prevent
Alkaline batteries in the handset from being charged by mistake.
Once the charger key is pressed, this radio begins to charge the
Ni-MH batteries in the handset. When the button is pressed once
again, the batteries is not charged anymore.
6) Mode (Function) key : Push to select the following function setting mode.
Brief press mode : 1'st press – Channel ,
2’nd press – CTCSS,
3’rd press –VOX level,

4'th press – Dual Watch Channel,
5’th press – Roger On/Off,
6'th press – Beep On/Off,
7’th press –Out Of Range On/Off,
8’th press –ID,
9’th press –Alert On/Off,
10’th press –Call
Long press mode : The radio goes to weather radio.
8) Speaker / Microphone
9) External DC power jack : 9V DC adaptor should be used for power supply
and charging the battery
10) HAND Chager Teminal : This is used for charging handset batteries.
11) LCD
(Liquid Crystal Display)
12) Transmit / Receive indicator : When receiving an incoming signal, the LED
indicator will light green, and while the PTT
button is pressed, the LED will light red.
These LED’s are used for backlighting as
well.

3.3 Function display
Monitor Indicator: Icon appears whe
n the monitor button is pressed and the channel
monitor function is activated.
Key Lock Indicator: Icon appears when the keypad is locked. This function
disables keys such as channel up/down and mode.
Signal Strength Indicator: Icon appears when
a signal is being received. The Icon
consists of five bars to indicate the received signal level.
Beep Tone Indicator: Icon ap
pears when beep tone confirmation tone is selected.
Icon disappears when tone is off.
Roger Beep Tone On/Off Indicator: Icon appears when the roger beep tone is
selected. Icon disappears when tone is off.
Battery Level Indicator: Icon indicates the battery charge level.
Large Segment Display: Indicates the channel number in use.
Caller ID Indicator: Icon appears when caller ID function is turned on. Icon
disappears when the function is off. This works with small segment display.
Coded Tone Controlled Squelch System(CTC) Indicator: Icon appears when the
CTCSS tone function is active.
Small Se3gment Display: Displays CTCSS tone option in the channel from 00 to
38, and also displays the caller ID number(01–
10) when caller ID function is
Scan Indicator: This function allows users to scan a channel to search f
or a valid
signal.

3.4 SETTING AND OPERATION
In order to communicate with other FRS units, both you and the
receiving party must be on the same channel.
FRS 3000-PK has 14channels indicated by the large digits on the
LCD display panel. Before trying to transmit on the selected channel,
you should press the Monitor Button to check the activity on that channel.
If someone is already on the selected channel, you should try another
channel that is clear
1) On/Off & Volume control Switch
Radio ON : Press the power button at least for 2 seconds.You will hear
confirming melody to indicated the unit is on.
Radio OFF : Press the power button at least for 2 seconds.
Volume setting : Press up[ù]or down[ü] button to adjust a level that is most
comfortable for you while monitor is active.
2) Setting the Channel and Tone Code(CTCSS)
FRS 3000-PK has 14 main channels and 38 sub-channels.
* 14 Frequency channels
* 38 CTCSS Code ( indicated by CTC icon on the LCD )
Dual Watch mode Indicator: Icon appears when dual watch mode is active.
Voice Activated Transmission (VOX) Indicator: This function allows hand
sfree
conversation. The Icon appears when the VOX mode is activated.
Out of Range Alarm Indicator: When this function is active, Icon blinks the
receiving signal is getting weaker. The Icon stops blinking when the receiving
signal comes back to the normal strength.
Weather Mode Indicator: Icon will b
e on steady when in the weather band mode.
The icon will blink when in the GMRS mode with the alert active.

To select the channel
* Turn the radio on.
* Press MODE button once, [XX] digit will blink on the LCD. XX is a channel.
* Press up[ù]or down[ü]button to choose the channel.
* Press the PTT button or MODE button to confirm.
To set the tone codes(CTCSS)
* Press MODE button once more, [XX 00 up to 38] will appear and CTC icon
and tone code digit will blink on the LCD. “00”means no CTCSS code.
* Press up[ù]or down[ü]button to choose the desired sub-channel to use.
* Press the PTT button or MODE button to confirm.
NOTE : To communicate with other FRS units, they must be switched to
the same channel and CTCSS sub-code. To communicate
with other GMRS units that do not have sub-codes, switch your unit
to the same channel with the sub-code set to OFF.
3) VOX (Voice Operated Switching)
This option enables you to have hands-free conversation. You do not have to
operate the PTT button each time when you want to transmit.
You can also choose the VOX sensitivity so suit your environment of operation.
( Ex : noisy road, motor bike, factory etc. )
To Set the VOX mode
* Press the MODE button until the [Uo oF Or XX] appears. XX is a vox level
* VOX icon will be appeared on the LCD.
To Set the VOX level
* Press the up[ù]button or down [ü] button to set the VOX level from 1 to 5.
“oF”is disable the VOX function.
“01”is least sensitive.
“05”is most sensitive.
* Press the PTT button or MODE button to confirm.
4) Setting the DW (dual watch)
To set the DW mode
* Press the MODE button until the [ oF of 01 up to 15] and DW icon blink on
the LCD.
* DW icon will appear on the LCD.
To set the dual watch(DW) channel
* Press the up[ù]button or down [ü]button to choose the channel.
“oF”means no DW mode.
“01 up to 15”means the channel that is dual-watched.

* Press the PTT button or MODE button to confirm.
5) Roger tone
This feature will give the tone signal to other parties when transmitting finished
(when PTT button is released.)
To activate or disable the Roger tone
* Press the Mode button until [rb on or oF] and the roger icon blink on the
LCD.
* Press the up[ù]button or down [ü]button.
* Press the PTT button or MODE button to confirm.
6) Beep tone
To set the beep tone
* Press the Mode button until [bP on or oF] and the BELL icon blink on the
LCD.
* Press the up[ù]button or down[ü]button.
* Press the PTT button or MODE button to confirm.
7) Setting Out of Range
To set the Out of Range
* Press the Mode button until [ir on or oF] and the Out of Range icon blink
on the LCD.
* Press the up[ù]button or down[ü]button.
* Press the PTT button or MODE button to confirm.
8) Setting ID code
To set the Caller ID
lPress the MODE button until the ID Icon and small segment display blinks.
lThen press the Up or Down button to select the desired ID number from 01
to 10. “oF”means no ID mode.
lPress the PTT button or Mode button momentarily to confirm the ID
number.
** When a signal is received from the radio where the one Caller ID is selected,
the radio that is receiving the signal displays the Caller ID number of the
transmitting radio.