HYT PRV599A User manual

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PRV599A
VHF PORTABLE TWO-WAY RADIO
OWNER’S MANUAL

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Shenzhen HYT Science & Technology Co., Ltd.
THANK YOU
Thank you for your purchase of HYT two-way portable radio. This
easy-to-use radio adopts the latest advanced technology, providing reliable
communications in high efficiency.
Before operate this radio, please read this manual carefully to be
acquainted with its features.

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CONTENTS
USER SAFETY INFORMATION...........................................................................................4
SUPPLIED ACCESSORIES ...................................................................................................7
ANTENNA, BATTERY AND OTHER ACCESSORIES.................7
1, BATTERY ...................................................................................................................7
2, ANTENNA ..................................................................................................................8
3, EXTERNAL SPK-MIC JACK ....................................................................................8
4, BELT CLIP ..................................................................................................................8
GETTING ACQUAINTED..................................................................................9
■CONTROL KNOBS, FUNCTION KEYS AND JACKS..............................................9
■LCD.............................................................................................................................10
FEATURES AND OPERATION.....................................................................11
1,POWER ......................................................................................................................11
2,VOLUME ...................................................................................................................11
3,MONITOR..................................................................................................................11
4, SELECT CHANNEL.................................................................................................11
5,SELECT SQUEL LEVEL ..........................................................................................11
6 RECEIVE ...................................................................................................................12
7, TRANSMIT...............................................................................................................12
8,CHANNEL SCAN......................................................................................................13
9, FREQUENCY REVERSE／TALK AROUND.........................................................13
10, DTMF SELECTIVE CALL ....................................................................................14
11, CODE SQUELCH ...................................................................................................15
12, SELECTIVE CALL.................................................................................................15
13, TWO-TONE SELECTIVE CALL...........................................................................16
14, SELECTABLE CTCSS ...........................................................................................16
15, AUTO-RESPONDER..............................................................................................16
16, CALL ALERT TONE ..............................................................................................17
CARE AND CLEANING....................................................................................17

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USER SAFETY INFORMATION
READ THIS IMPORTANT INFORMATION ON SAFE AND EFFICIENT OPERATION
BEFORE USING YOUR HYT PORTABLE TWO-WAY RADIO.
◇ Only qualified technicians are allowed to repair this product.
◇ Turn off your radio prior to entering any area with a potentially explosive
atmosphere. Do not remove, install, or charge batteries in such areas.
◇ Do not use any portable radio that has a damaged antenna. If a damaged
antenna comes into contact with your skin, a minor burn can result.
◇ Do not expose the radio in direct sunlight for a long time or place it close
to a heating source.
User Safety, Training, and General Information
READ THIS IMPORTANT INFORMATION ON SAFE AND EFFICIENT OPERATION
BEFORE USING YOUR RELM HANDHELD PORTABLE TWO-WAY RADIO.
Compliance with RF Energy Exposure Standards
Your RELM two-way radio is designed and tested to comply with a number of national and
international standards and guidelines (listed below) regarding human exposure to radio
frequency electromagnetic energy. This radio complies with the IEEE (FCC) and ICNIRP
exposure limits for occupational/controlled RF exposure environment at duty cycles of up to 50%
talk-50% listen and should be used for occupational use only. In terms of measuring RF energy
for compliance with the FCC exposure guidelines, your radio radiates measurable RF energy only
while it is transmitting (during talking), not when it is receiving (listening) or in standby mode.
Note: The approved batteries supplied with this radio are rated for a 5-5-90 duty cycle (5%
talk-5% listen-90% standby), even though this radio complies with the FCC occupational
RF exposure limits at duty cycles of up to 50% talk.
Your RELM two-way radio complies with the following of RF energy exposure standards
and guidelines:
•United States Federal Communications Commission, Code of Federal Regulations; 47CFR
part 2 sub-part J
•American National Standards Institute (ANS)/Institute of Electrical and Electronic Engineers
(IEEE) C95. 1-1992

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•Institute of Electrical and Electronic Engineers (IEEE) C95. 1-1999 Edition
• International Commission on Non-Ionizing Radiation Protection (ICNIRP) 1998
• Ministry of Health (Canada) Safety Code 6. Limits of Human Exposure to Radio frequency
Electromagnetic Fields in the Frequency Range from 3kHz to 300GHz, 1999
•Australian Communications Authority Radio communications (Electromagnetic
Radiation-Human Exposure) Standard 1999 (applicable to wireless phones only)
Operational Instructions and Training Guidelines
To ensure optimal performance and compliance with the occupational/controlled environment RF
energy exposure limits in the above standards and guidelines, users should transmit no more than
50% of the time and always adhere to the following procedures:
Transmit and Receive
To transmit (talk), push the Push-To-Talk (PTT) button; to receive, release the PTT button.
Hand-held radio operation
Hold the radio in a vertical position with the microphone one to two inches (2.5 to 5 cm) away
from the lips.
Body-worn operation
•Always place the radio in a RELM approved clip, holder, holster, case, or body harness for this
product. Use of non-RELM-approved accessories may exceed FCC RF exposure guidelines.
•If you do not use a RELM approved body-worn accessory and are not using the radio in the
intended use position in front of the face, then ensure the antenna and the radio are kept 2.5 cm
(one inch) from the body when transmitting.
Antennas & Batteries
•Use only RELM approved, supplied antenna or RELM approved replacement antenna.
Unauthorized antennas; modifications, or attachments could damage the radio and may violate
FCC regulations.
• Use only RELM approved, supplied batteries or RELM approved replacement batteries. Use
of non-RELM-approved batteries may exceed FCC RF exposure guidelines.
Approved Accessories
For a list of RELM approved accessories see the accessories page of this user manual or visit the
following website which lists approved accessories: http://www.RELM.com
FCC Compliance
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment
off and on, the user is encouraged to try to correct the interference by one or more of the
following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is

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connected.
• Consult the dealer or an experienced radio/TV technician for help.
Industry Canada Compliance
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numerique de la classe B est conforme à la norme NMB-003 Canada.
FCC Requirements
Your radio must be properly licensed Commission prior to use. Your RELM Wireless dealer can
assist you in meeting these requirements. Your dealer will program each radio with your
authorized frequencies, signaling codes, etc., and will be there to meet your communications
needs as your system expands.
Only qualified technicians are allowed to maintain this product.
Do not use the transceiver or charge a battery in explosive areas such as coal gas, dust, steam, etc.
Switch OFF the transceiver while refueling or parking at gas station.
Do not modify or adjust this transceiver without permission.
Do not expose the transceiver to direct sunlight over a long time, nor place it close to heating
source.
Do not place the transceiver in excessively dusty, humid areas, nor on unstable surfaces.
Safety: It is important that the operator is aware of and understands hazards common to the
operation of any transceiver.
Please carefully take the transceiver out of the box. We recommend that you confirm the items
listed in the following table before discarding the box. If any items are missing or have been
damaged during shipment, file a claim with the carrier immediately.

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SUPPLIED ACCESSORIES
Item Qty. (pcs)
Antenna 1
Belt clip 1
Screw set 1
External speaker-microphone jack cover 1
Locking bracket for speaker-microphone 1
Battery * 1
Charger 1
Warranty card 1
Introduction manual 1
Note：*---Not available in simple packing。
ANTENNA, BATTERY AND OTHER ACCESSORIES
The battery is not charged by the factory, please charge it before use. Repeat charging and
discharging cycle for two or three times can make battery in its normal capacity. In any condition,
when the battery is low, it needs to recharge or replacement
NOTE:
★If the battery is fully charged, do not charge it any more. Overcharging will reduce
battery life and cause damage.
★After charging finished, remove the battery from the charger, otherwise, when
re-connect the charger with power supply, the battery will be charged again, which may
cause overcharging.
Do not complete the battery terminals (short-circuit) or dispose the battery by fire, and not
disassemble the battery.
1, BATTERY
Align the four slots on the battery cover with the tabs on the aluminum cover and then push up
the battery until the latch on the cover bottom locks in place. To remove the battery,
release the latch and slide the battery away from the radio.

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2, ANTENNA
Position the antenna base on the radio connector and screw the antenna in clockwise until clicks
in place.
3, EXTERNAL SPK-MIC JACK
Plug speaker-microphone pins into the SP/MIC jacks. Fix the external speaker-microphone with
the retainer by using supplied screws(3mm×6mm ). If the external speaker-microphone is not
used, cover the SP/MIC jacks with jack caps by using supplied screws(3mm×6mm).
4, BELT CLIP
If it is necessary, it can be mounted to the belt with 2 pcs screws of 3mm×8mm .

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GETTING ACQUAINTED
■CONTROL KNOBS, FUNCTION KEYS AND JACKS
⑴ CHANNEL SELECTOR KNOB
Used to select channel and squelch level. In addition, it can be programmed by the dealer to
delete undesired channels from scan list or to select CTCSS frequency.
⑵ POWER/VOLUME KNOB
Used to turn on or turn off the power, and also used to adjust the volume.
⑶ LED INDICATOR
Red LED glows in transmitting. When the battery voltage lowers to the critical level, red
LED flashes. Green LED glows when receiving signals. If DTMF/Two-tone is used,
when the radio receives correct signals, orange LED flashes.
⑷ LCD
Antenna
Speaker

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used to display operation status.
⑸SCN KEY
Used to control scanning.
⑹DIAL KEY
When store and send feature is enabled, it is used to send codes; and when auto-dial feature
is enabled, it is used to store, confirm, send or delete codes.
⑺ TA KEY
Used to enable or disable FREQUENCY REVERSE/ TALK AROUND feature.
⑻ LO (low power) KEY
Used to select transmit power.
⑼ KEYPAD
Used to enter, store or send DTMF codes.
⑽PTT BUTTON
Used to switch between transmit and receive mode.
⑾LAMP KEY
Used to turn on or turn off LCD backlight . Press [LAMP], the backlight will illuminate for
about 5 seconds and then automatically turn off. During illuminating, press any key except
[LAMP], the timer will retime. To turned off the backlight, press [LAMP] again. .
⑿MONI BUTTON
Pressing this button can monitor the selected channels.
⒀EXTERNAL SPEAKER-MICROPHONE JACK
Used to connect with external speaker-microphone.
■LCD
①Appears when low power is selected.
②Appears when selected channel is busy.
③Appears when MONI button is pressed to disable CTCSS/CDCSS.
④Appears when MONI button is pressed to switch the speaker on.
⑤Appears when the selected channel is in scan list. Radio only scans channels in the scan list.
⑥Appears in scanning.
⑦Displays selected channel number, squelch level or DTMF code. When selective call is
enabled, messages received is also displayed here.。

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FEATURES AND OPERATION
1,POWER
To turn on the power, turn POWER/VOL knob clockwise until a “click” is heard (the tone also
can be programmed as “beeps”), and characters will be displayed on LCD. To shut off the power,
turn POWER/VOL knob counter clockwise until a “click” is heard, and characters disappears
from LCD. 。
2,VOLUME
Press [MONI] button to monitor background noise, and at the same time turn POWER/VOL
knob to adjust the volume to a comfortable level.
3,MONITOR
If monitor function has been set valid by your dealer, in receive mode, press [MONI] button,
you can monitor activities on your selected channels.
There are three ways to operate [MONI] button, one of which can be chosen by your dealer.
①Hold down the button , the speaker is switched on; Release the button, the speaker is switched
off
②Hold down the button, if received signal has correct CTCSS/CDCSS, speaker is switched on;
release the button , speaker is switched off.
③Press the button, if received signal has correct CTCSS/CDCSS, speaker is switched on;
release the button , speaker is switched off.
If monitor function has been set invalid by the dealer, pressing [MONI] cannot monitor the
channel.
4, SELECT CHANNEL
Turn Channel selector knob to change channel number which is displayed on LCD. Turn the
knob clockwise, channel number will increase, and turn counter clockwise, channel number will
decrease. Transmit and receive frequencies of each channel have been set by the dealer.
5,SELECT SQUEL LEVEL
Hole down [MONI] button, and then press [LO], current squelch level code is displayed on LCD
as below figure. Turn CHANNEL SELECTOR knob to select the squelch level, and then press
any key except [LAMP] to store the setting. LCD returns to origin display.
Note: If the squelch level is set too high, you may not efficiently receive weak signals; if the

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level is set too low, you may be interfered by noise or other unwanted signals.
6 RECEIVE
CTCSS /CDCSS/ DTMF/Two-Tone function can be set by your dealer. When the signaling is set,
only signals with same signaling can be received, otherwise, all conversations on your selected
channel can be heard.
7, TRANSMIT
Hold down PTT button, red LED glows, speak into the microphone (mouth is 10cm away from
the microphone) or enter DTMF code by the keypad, your message is transmitted. Release PTT,
radio returns to receive mode.
NOTE:
★If Busy Channel Lockout feature has been enabled by your dealer and the selected channel is
busy , pressing [PTT] button, radio will sound alert tone, and transmission is automatically
prohibited.
★ Holding down [PTT] button, radio will check its battery voltage. When the battery lowers to
the preset value, red LED flashes, and when the battery lowers further, radio stops transmitting
and sounds alert. In this condition, please recharge or replace the battery.
★When continuous transmission time exceeds preset time( the time is set by the dealer), radio
stops transmission and sounds alert , and then returns to receive mode. The dealer also can set
an alert tone before the transmission time exceeds the preset time, which is different from the
time out alert tone.
■SELECT TRANSMIT POWER
If high transmit power is set on current channel by your dealer, pressing [LO] can toggle
transmit power between high and low (when in low power,“Lo”appears on LCD). Since using
low transmit power can save battery and decrease the interference to others, low transmit power
is selected with priority when the communications quality can be guaranteed.
NOTE:
★If high transmit power is prohibited on current channel and “Lo” is displayed on LCD, press
[LO], an alert tone of wrong operation will be heard, and low transmit power will not change.
★The operation of switching a channel in high transmit power to low transmit power will switch
all channels in high transmit power to low power.
■CONNECT ID/DISCONNECT ID
When radio is connected or unconnected to a repeater, a special connect ID or disconnect ID can
be sent, which can be set by your dealer. One of the following methods will be set by your dealer.
To transmit a connect ID:
Method 1: Press [PTT], connect ID is transmitted.
Method 2: While holding down [PTT] button, press [DIAL], and then press [*], connect ID is

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transmitted.
To transmit a disconnect ID:
Method 1: Release [PTT], disconnect ID is transmitted.
Method 2: While holding down [PTT] button, press [DIAL], and then press [*], disconnect ID is
transmitted.
8,CHANNEL SCAN
Press [SCN], radio begins scanning from current channel in ascending order, and “SCAN”
appears on LCD. To stop scanning, press [SCN] again.
■SCAN OPERATION
When radio locks in on a busy channel, scan can be restarted according to the restart mode,
which can be programmed by the dealer as time-operated scan or carrier-operated scan.
①Time-operated scan
After radio locks in on one busy channel for a period (the time is set by the dealer.), the radio will
begin scanning other channels even if the channel is still busy.
②Carrier-operated scan
Radio will lock in on one busy channel until there is no activity, and then after a delay (delay
time is set by the dealer), radio begins scanning other channels.
■PRIORITY SCAN
If your dealer has set a priority channel, when radio scans non-priority channels, it will
periodically detect the priority channel, and when it detects any activity on the priority channel,
radio switches to scan the priority channel immediately. When a priority channel is selected, “P”
appears on LCD.
■CHANNEL DELETE
This feature allows radio to delete undesired channels from the scan list. Select the channels to be
deleted by using CHANNEL SELECTOR knob in non-scan mode. Holding down [MONI] button
and pressing [SCN] key can toggle the selected channel between ADD and DELETE. When the
current channel is in scan list, “A” is displayed on LCD.
DELETE ADD
■SCAN REVERT CHANNEL
The scan revert channel feature sends you to the right transmit channel while responding to or
initiating a call during channel scan. Press [PTT] button, radio stops scan and transmits on the
revert channel. This feature is set by the dealer.
9, FREQUENCY REVERSE／TALK AROUND
If communications between radios are disrupted because of a long distance from repeaters or
other reasons, frequency reverse feature can be used in such cases. When frequency reverse
feature is enabled, transmit frequency and receive frequency will be reversed, and at the same

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time, corresponding CTCSS/CDCSS encode and decode also be reversed. To enable or disable
the feature, press [TA] key.
Enable Disable
There is some difference between TALK AROUND and FREQUENCY REVERSE. When TALK
AROUND is enabled, TX frequency is changed to be same as RX frequency and at the same time
CTCSS/CDCSS encode and decode change correspondingly. To enable or disable TALK
AROUND, press [TA] key.
Enable Disable
10, DTMF SELECTIVE CALL
■MANUAL DIAL
Holding down [PTT] button, press DTMF keys, corresponding DTMF digits are transmitted, and
DTMF tones can be heard. The radio can be programmed by the dealer to continue transmitting
for 2 seconds after [PTT] is released, therefore, in the 2 seconds, a DTMF code can be
transmitted without pressing [PTT] button. [A], [B], [C] and [D] can be programmed invalid by
your dealer.
■STORE AND DIAL
When this function is enabled, after entering DTMF code with up to 16 digits in receive mode,
press [DIAL] key, you can transmit the entered code.
★Even if [A],[B],[C]and [D] have been set invalid in manual dial, these keys still can be used in
this feature.
★”[D]” can be set as vacant number by the dealer, i.e., “D” is not transmitted, it only represents
a pause time that is set by the dealer.
■AUTO-DIAL
This function is enabled or disabled by the dealer.
①Store DTMF code
One DTMF code with maximum 16 digits can be stored in one digit key ([0]-[9]). Press [DIAL],
and then press [#], LCD displays as the below. Enter the code to be stored ( 16 digits maximum)
with the keypad, and press[DIAL] , and then press one digit key of [0]～[9], the entered code is
stored in the corresponding digit key.

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★Even if [A],[B],[C]and [D] have been set invalid in manual dialing, these keys can be used
when this feature is enabled.
★If enter unwanted digits, press [MONI] button, and then re-enter the whole number.
★To disable this feature, press[PTT], [SCN] , [TA] or [LO] , and the stored codes are deleted.
②CONFIRM STORED DTMF CODE
Press [DIAL] key, and then press [*], LCD displays as the below. And then press the digit key
([0]-[9]) in which the DTMF code is stored, the stored code is displayed on LCD and
corresponding DTMF tone is heard. To return to original display, press any key.
③DIAL
To transmit stored DTMF code, press [DIAL], and then press corresponding digit key ([0]-[9]).
The code is displayed on LCD during transmitting.
④DELETE STORED DTMF CODE
To delete a code, press [DIAL], and press [D] (at this time LCD displays as the below), and
then press the digit key in which the code is stored ([0]-[9]). To cancel this operation, press any
key other than [0]～[9].
■RE-DIAL
Double pressing [DIAL] key, radio re-dials the last transmit code, which will be displayed on
LCD during transmitting.
NOTE: Re-dial memory is deleted when the radio is shut off.
11, CODE SQUELCH
Code squelch can be set by the dealer. If the feature is enabled and the received code is same as
the radio ID code (3-10 digits) which is set by the dealer, squelch is opened. If Auto- Responder
and Call Alert Tone are enabled by the dealer, they can be used together with Code Squelch. But
when Group Call is enabled, Auto- Responder is invalid.
To send a call, hold down [PTT] and enter ID code or Group Code by the keypad, if you like,
you also can operate in store and send or auto-dial mode. When transmission ends, the radio
returns to normal operation.
Note: Code squelch cannot be used together with selective call on the same channel.
12, SELECTIVE CALL
Selective call can be set by the dealer. This feature is similar with code squelch, but it can be

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used to transmit or receive combination message (maximum with 5 digits). The format is:
ID code(3 digits) +1 intermediate code +message code (maximum with 5 digits)
When the radio receives DTMF code as preset, the speaker is switched on, and message code
appears on LCD. When radio receives its ID code, “C” appears on LCD; and when receives a
group code, “A” appears on LCD. When there is no message code, “NO DATA”appears on
LCD.
To send a call, hold down [PTT] and enter preset DTMF code, and if you like, you also can
operate in store and send or auto-dial mode. After transmission, radio returns to normal operation.
Note: If code squelch has been enabled on the selected channel, selective call cannot be enabled
on the channel.
13, TWO-TONE SELECTIVE CALL
When Two-Tone selective call is set valid by the dealer, hold down [PTT] and [LAMP]
simultaneously to transmit corresponding two tones, and when the end tones are sounded, release
the keys. In Two-Tone valid time, the corresponding radios can receive the call.
14, SELECTABLE CTCSS
This feature (set by the dealer) is used to temporarily change CTCSS frequencies on some
channels. To enter selectable CTCSS mode, use CHANNEL SELECTOR knob to select wanted
channels, and then hold down [MONI] button, and then press [DIAL] key (at this time LCD
displays as the below), and then use CHANNEL SELECTOR knob to select a CTCSS number
from 39 CTCSS numbers. New selected frequency is valid only in selectable CTCSS mode. To
exit from this mode, hold down [MONI] button, press [DIAL] key, and LCD will return to
original display.
15, AUTO-RESPONDER
Auto-Responder can be set to work with code squelch or selective call. After this feature is
enabled, when receiving a call with correct code, radio will automatically respond. One of the
following responds can be set by the dealer.
★alert tone
★radio ID code
★code stored in [0] key

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16, CALL ALERT TONE
In receive mode, when the radio receives correct DTMF code, it will sound alert tone. To stop the
alert tone, press any key.
CARE AND CLEANING
◇ Avoid physical abuse of your radio such as carrying it by the antenna or remote
microphone.
◇ Wipe the battery contacts with a lint-free cloth to remove dirt, grease, or other material
that may prevent good electrical connection.
◇ When not in use, keep the accessory jacks covered with the protective cap.
Clean the shell, controls and keys of your radio with neutral detergent and warm water
after long period of usage. Avoid using strong chemicals.