Copyright © 2019 by BTECH; https://baofengtech.com/
All rights reserved. No part of this publication may be reproduced, distributed, or
transmitted in any form or by any means, including photocopying, recording, or other
electronic or mechanical methods, without the prior written permission of the publisher,
except in the case of brief quotations embodied in critical reviews and certain other
noncommercial uses permitted by copyright law. For permission requests, write to the
publisher.
Contributions taken from: Miklor.com Resource Site, and Jim Unroe, KC9HI. Used by
permission. All rights reserved.
THANK YOU FOR YOUR PURCHASE OF THE BTECH GMRS-50X1. THIS
MULTI-BAND RADIO WILL DELIVER INSTANT RELIABLE
COMMUNICATION.
PLEASE READ THIS MANUAL CAREFULLY BEFORE USE
!i!!!!
Table of Contents
Part I. Getting started 1!
Chapter 1. – Getting Started 2!
Unpacking and Inspecting 4!
5!
GMRS-50X1: Overview of the Front Panel 6!
GMRS-50X1: Overview of the Rear Ports 8!
Hand Held Mic Keys and Description 10!
Color Display and Icon Descriptions 11!
Antenna Basics 14!
Grounding Plane: 14!
Antenna Requirements 15!
NOAA Weather Channels 16!
Add a NOAA Channel 17!
Chapter 2. - GMRS Information and FCC Declaration 18!
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GMRS-50X1!
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GMRS Repeaters 18!
FCC NOTICE AND DECLARATION 18!
FCC LICENSE REQUIRED FOR GMRS OPERATION 19!
GMRS Frequency Chart, Channel Guide 20!
Chapter 3. – Basic Shortcuts and Use 21!
Pound # Key 21!
Star * Key 21!
Turning the unit on 22!
Turning the unit off 22!
Adjusting the volume 22!
Making a call 23!
Channel selection 23!
Frequency (VFO) mode 23!
Channel (MR) mode 24!
Monitor Both VFO & MR Modes 24!
Chapter 4. – Programming Scanning Channels 26!
Manual programming 26!
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Adding Scanning Channels 27!
Computer programming 28!
Chapter 5. – Other Settings 29!
Toggle from High, Mid, to Low Power 29!
Storing an FM Radio Station and Scanning 29!
Keypad Lock-out 29!
PTT ID Setting 29!
DTMF RX Settings 30!
DTMF TX Settings 30!
Remote Stun 31!
Remote Kill 32!
Remote Revive 32!
Read More About Remote Commands 33!
DTMF Receive Settings, Transmit Setting (Call Key) 33!
2TONE Receive Settings, Transmit Setting (Call Key) 33!
5Tone Receive Settings, Transmit Setting (Call Key) 34!
Scanning modes 35!
Time operation 35!
Carrier operation 35!
Search operation 35!
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GMRS-50X1!
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SKIP Scanning Channels 36!
Scanning a Frequency Range (VFO Mode) 36!
Tone Scanning 37!
Scanning for CTCSS and DCS Tones/Codes 37!
Dual, Tri, and Quad Watch (TMR) 40!
Chapter 6. - Selective calling 42!
CTCSS 44!
DCS 45!
1000Hz, 1450Hz, 1750Hz, 2100Hz Tone-burst 46!
Part III. How-to and setup guides. 47!
Chapter 7. - Customization 48!
Text Display Colors 48!
Sync Display Channels 50!
Appendix A. - Menu definitions 51!
FCC Notice 62!
!v!!!!
Appendix B. - Technical specifications 64!
General 64!
Receiver 65!
Transmit
DCS table 66!
CTCSS table 69!
65!
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1
Part I. Getting started
Part one covers the basic setup and use of your mobile two-way transceiver.
CHAPTER 1. - GETTING STARTED
CHAPTER 2. - GMRS INFORMATION AND FCC DECLARATION
CHAPTER 3. - BASIC USE
CHAPTER 4. - PROGRAMMING SCANNING CHANNELS
CHAPTER 5. - OTHER SETTINGS
CHAPTER 6. - SELECTIVE CALLING
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Chapter 1. – Getting Started
BEFORE PROCEEDING INSURE:
• Qualified technicians shall service this equipment only. Do not modify the radio for any reason.
• Use only BTECH supplied or approved accessories.
• Turn off your radio prior to entering any area with explosive and flammable materials. Do
NOT USE your transceiver at a gas/fuel station
• For vehicles with an air bag, do not mount your radio in the area over an air bag or in the air bag
deployment area.
• Do not expose the radio to direct sunlight over a long time, nor place it close to a heating
source.
• If the unit emits smoke or an odor, you should immediately cut off the power supply. Then send
the radio to the nearest service center or dealer
• Do not operate the mobile transceiver on high power unless it is necessary. Do not transmit for
long periods of time, as it may overheat the transceiver.
• Keep the unit away from dusty, damp and wet environments
• Use the correct power supply (~13.8V); do not use incorrect or higher voltage (e.g. 24V)
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3
Exposure to Radio Frequency Energy
Your BTECH radio is designed to comply with the following national and international standards and guidelines regarding
exposure of human being to radio frequency electromagnetic energy:
- United States Federal Communications Commission, Code of Federal Regulations: 47 CFR part 2 sub-part J
- American National Standards Institute (ANSI)/Institute of Electrical & Electronic Engineers (IEEE) C95. 1-1992
- Institute of Electrical and Electronic Engineer (IEEE) C95. 1-1999 Edition
- National Council on Radiation Protection and Measurements (NCRP) of the
United States, Report 86, 1986
- International Commission on Non-lionizing Radiation Protection (ICNIRP) 1998
To control your exposure and ensure compliance with the general population or uncontrolled environment exposure limits,
transmit no more than 50% of the time. The radio generates measurable RF energy exposure only when transmitting.
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Unpacking and Inspecting
• Please check the packaging of your radio for any signs of damage.
• Carefully open the box and confirm you received the items listed below.
• If you find the radio or the included accessories are damaged or lost, immediately contact your
dealer.
Whatʼs in the Box
GMRS-50X1
Mobile Radio
Microphone
Power Cable (Direct Connect)
Mounting Screws Mounting Bracket
and Fuse
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GMRS-50X1: Overview of the Front Panel
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1. Power, On/Off Press + Volume Knob
2. V/M Mode Switch (Channel/Frequency)
3. Confirm Key Press +Main Selector
(Menu Knob)
4. Monitor function
5. FM radio function key
6. Display screen
7. Call key
8. Exit Menu + A/B/C/D signal switching +
alarm function
9. High/Mid/Low Power Switch + Lock
10. Microphone Connector
11. DATA, Programming Jack: PC-04
Programming Cable Jack
RJ45!Connector:!
: when in standby, press to send caller ID
(ANI) in the selected signaling mode; while
transmitting, press to send activate signaling.
: press to turn on the squelch, repeat to
turn off the squelch.
: press to switch between channel mode
and frequency mode.
: press to choose between A, B, C, or D
frequencies --- Or exit function mode.
: press to enter and exit FM radio
: press to toggle high/mid/low power;
hold to key-lock/or key-unlock
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GMRS-50X1: Overview of the Rear Ports
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1. SO-239 RF Antenna Connector:
Connects to PL-259 Antennas
2. DC Power Input (13.8V – 20A Peak)
3. TS Line Out: Includes Audio-out/GND
4. Cooling Fan
TS Line-Out Connector: The GMRS-50X1 uses a
3.5MM TS MONO Speaker out in the rear – it is
compatible with standard 3.5MM TS Mono
Speakers
Programming!Cable:!
PC-04 Cable available at: www.baofengtech.com/accessories
Programming software available at: www.baofengtech.com/download
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Hand Held Mic Keys and Description
1 “MENU”: Function key
VFO/MR Toggle (Long Press)
2 “UP”: Higher frequency
3 “DOWN”: Lower frequency
4 “EXIT”: Exit the AB channel switch, alarm
function
Alarm Activate (Long Press)
5 “*/SCAN”: Scanning function
6 “#/LOCK”: High / Low Power Toggle
Keyboard Lock (Long Press)
7 “0”: Number 0
8 “1”: Number 1
9 “2”: Number 2
10 “3”: Number 3
11 “4”: Number 4
12 “5”: Number 5
13 “6”: Number 6
14 “7”: Number 7
15 “8”: Number 7
16 “9”: Number 9
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Icon
Description
Icon
Description
Ico
Description
Channel allowed to TX and RX
DCS Enabled (TX, RX or Both)
Positive Offset (Freq. Mode)
Channel allowed to RX Only
Transmit Power: Low
Negative Offset (Freq. Mode)
Channel allowed to TX Only
Transmit Power: MID
Offset Enabled (Chan. Mode)
Channel disabled to TX or RX
Transmit Power: High
Channel set to Narrowband
Keypad is Locked
2Tone Calling Enabled
Channel set to Wideband
CTCSS Enabled (TX, RX or
Both)
5Tone Calling Enabled
Channel Reverse Enabled
Battery Strength
(Weak Battery Indicator)
DTMF Calling Enabled
Color!Display!and!Icon!Descriptions!
The Top Line on the LCD will show the current selected channel’s settings at a glimpse:
!
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Antenna Basics
Your Mobile Radio Kit does not include an Antenna. It is VERY Important to NOT transmit without an
antenna or dummy load attached to the mobile radio. Doing so, will cause harm to the internal
components of your radio.
You will want to choose a suitable antenna for the bands you plan on transmitting and receiving on. If
you plan on transmitting on GMRS Channels you will want to ensure you have picked an antenna that
states it is capable of working with 462-467MHz. If an antenna is not properly tuned for the frequency
you transmit on – it can cause damage with the reflected power going back into the radio.
Pick an antenna with SWR of less than 1.5:1 to safely transmit.
Grounding Plane:
Antennas require an appropriate grounding plane to properly work:
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Magnetically Mounted Antennas:
These antennas must be grounded to a metal surface, such as a vehicle body. Magnetic base antennas
do not properly operate unless they are fully magnetically grounded first.
NMO or PL-259 Base Antennas:
These antennas will normally require a base or mobile hardware kit. These kits are grounded either
through drill or clamp inserts on vehicles, magnetically mounted, or available as stationary base
hardware kits. Some antennas may include a base station grounding plane kit.
Antenna Requirements
Antenna SWR Rating: 1.5:1 or less (on the radio frequencies in use.)
Antenna Impedance: 50 ohms (use 50 ohms rated coax and coax connectors)
Antenna Grounding: Ensure the antenna is mounted with a grounding plane
Visually Inspect Coax/Connectors for any Slits or Damage – moisture should not be allowed to penetrate
fittings or your coax
To maximize the life of your radio, it is important to understand antenna basics before transmitting on
your radio, transmitting without an antenna, or with high SWR (Standing Wave Ration) – can void
warranty support.
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An Active SWR Meter is a great tool to have when selecting an antenna for your needs. You can monitor
and confirm that your SWR is within safe levels when setting up your radio for the first time (periodically
checking SWR and your antenna set-up is advised)
NOAA Weather Channels
To add your local NOAA Weather channel a new scanning channel, start by switching your radio to
Frequency (VFO). Select your desired NOAA frequency (above) using the numerical keypad.
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Add a NOAA Channel
The following steps assume that you're in Frequency (VFO) mode and that you've entered the NOAA
frequency to store to memory.
1. Press the key to enter the menu.
2. Enter “46” on the numerical keypad to get to MEM-CH.
3. Press to select.
4. Use the and keys to select an empty memory channel or enter it directly on the
numerical keypad.
5. Press the key to confirm.
a. NOTE: If the station is actively receiving it will not store. To save an active receiving
channel – remove the antenna to prevent the channel from receiving and store to
memory.
6. Press the key to exit the menu.
Switch your radio to Memory (MR) to test your newly added NOAA channel.
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GMRS-50X1!
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Chapter!2.!-!GM RS !Inf or m a ti o n!a nd! FC C !
Declaration!
THE$BTECH$GMRS-50X1$IS$FCC$PART$95E$CERTIFIED$FOR$GMRS$USAGE$
THE$GMRS-50X1$REQUIRES$A$GMRS$LICENSE$TO$TRANSMIT$$
GMRS Repeaters
The channels that are labeled "REPT" run through repeaters that are set up for GMRS usage. Use these
channels if you have permission from those that run your local repeater for GMRS channels.
FCC NOTICE AND DECLARATION
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may cause
undesired operation
The scanning receiver in this equipment is incapable of tuning, or readily altered, by the user to operate
within the frequency bands allocated to the Domestic public Cellular Telecommunications Service in Part
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FCC LICENSE REQUIRED FOR GMRS OPERATION
The GMRS-50X1 operates on GMRS (General Mobile Radio Service) frequencies, which require an FCC
(Federal Communications Commission) license. You must be licensed prior to transmitting on all
channels, which comprise of GMRS channels. Serious penalties could result for unlicensed use of GMRS
channels, in violation of FCC rules, as stipulated in the Communications Act's Sections 501 and 502
(amended).
You will be issued a call sign by the FCC, which should be used for station identification when operating
the radio on GMRS channels. You should also cooperate by engaging in permissible transmissions only,
avoiding channel interference with other GMRS users, and being prudent with the length of your
transmission time.
To obtain a license or ask questions about the license application, contact the FCC at 1-888-CALL FCC or
go to the FCC's website: https://www.fcc.gov/ and request form 605.
Or you can apply online direct for a GMRS license (http://wireless.fcc.gov/uls/ )– a guide for this can be
found at: http://alcornema.com/gmrslisenceinfo.htm
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GMRS FREQUENCY CHART
CH: Name
Ch. Freq
CH: Name
Ch. Freq
CH: Name
Ch. Freq
CH: Name
Ch. Freq
Offset
01: GMRS01*
462.56250
08: GMRS08**
467.5625
15: GMRS15
462.5500
23: REPT15
462.5500
+5MHz
02: GMRS02*
462.58750
09: GMRS09**
467.5875
16: GMRS16
462.5750
24: REPT16
462.5750
+5MHz
03: GMRS03*
462.61250
10: GMRS10**
467.6125
17: GMRS17
462.6000
25: REPT17
462.6000
+5MHz
04: GMRS04*
462.63750
11: GMRS11**
467.6375
18: GMRS18
462.6250
26: REPT18
462.6250
+5MHz
05: GMRS05*
462.66250
12: GMRS12**
467.6625
19: GMRS19
462.6500
27: REPT19
462.6500
+5MHz
06: GMRS06*
462.68750
13: GMRS13**
467.6875
20: GMRS20
462.6750
28: REPT20
462.6750
+5MHz
07: GMRS07*
462.71250
14: GMRS14**
467.7125
21: GMRS21
462.7000
29: REPT21
462.7000
+5MHz
22: GMRS22
462.7250
30: REPT22
462.7250
+5MHz
GMRS Frequency Chart, Channel Guide
* Per FCC GMRS Radio Guidelines; Channels 1-7 are limited to Low Power - 5watt output
**Per FCC GMRS Mobile Radio Guidelines Channels 8-14 transmitting is disabled; they can receive and
monitor communications, but GMRS mobile radios cannot transmit on these channels.
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Chapter 3. – Basic Shortcuts and Use
Pound # Key
Keypad! Lock!
To enable or disable the keypad lock, press and hold the key for about two seconds.
A quick toggle of the # will alternate power levels from High power to Low power
The keypad lock will lock both the main radio buttons itself and also the handheld keypad.
The PTT/MONI/and Power Buttons will not be locked when enabled.
Star * Key
A short momentary press of the key enables the reverse function (reverses the TX/RX settings
according to Offset settings)
When listening to broadcast FM a momentary press will start the scanning. Scanning in broadcast FM
will stop as soon as an active station is found
To enable scanning, press and hold the key for about two seconds
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Turning the unit on
To turn the unit on, simply push and hold the volume knob until it turns on. If your radio powers on
correctly there should be an audible tone after about one second and the display will show a message or
flash the LCD depending on settings
Turning the unit off
To turn the unit off, simply push and hold the volume knob until it turns off. The unit is now off.
Adjusting the volume
To turn up the volume, turn the volume knob clock-wise.
To turn the volume down, turn the volume/power knob counter-clock-wise.
By using the monitor function (MONI button), you can more easily adjust your volume by
adjusting it to the un-squelched static.
!
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Making!a!call!
Press and hold the PTT button on the side of the handheld mic to transmit. While transmitting, speak
approximately 3-5cm (1-2 inches) from the microphone. When you release the PTT, your transceiver will
go back to it receive mode.
Channel!selection!
There are two modes of operation: Frequency (VFO) mode, and Channel or Memory (MR) mode.
For everyday use, Channel (MR) mode is going to be a whole lot more practical than Frequency (VFO)
mode. However, Frequency (VFO) mode is very handy for experimentation out in the field. Frequency
(VFO) mode is also used for programming scanning channels into memory. For details on how to program
your transceiver see Chapter 4.
Frequency (VFO) mode
In Frequency (VFO) mode you can navigate up and down the band by using the and keys (or
rotating the selector knob). Each press (or rotation click) will increment or decrement your frequency
according to the frequency step you've set your transceiver to (Menu Item 1: Step)
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You can also input frequencies directly on your numeric keypad with kilohertz accuracy. However, the
radio will floor to the nearest frequency that corresponds to your frequency step, in other words, when
you input frequencies with greater than 1kHz resolution (such as 145.6875 MHz in the example below),
always round your input up.
Channel (MR) mode
The use of Channel (MR) mode is dependent on actually having programmed in some channels to use.
The GMRS-50X1 is hard loaded with the 30 GMRS channels (see the GMRS Frequency Chart, Channel
Guide in Chapter 2 for Channels and Transmitting restrictions). You can program additional analog
scanning channels into memory channels 000 and 031-255.
You can use the and keys to navigate between channels (or Rotate the Selector Knob)
!
Monitor!Both!VFO!&!MR!Modes!
You can toggle from VFO and MR (Memory Recall) mode by either pressing the V/M button on the front
of your radio, or you can toggle modes from the Handheld Mic by a long press of the ‘Menu’ button.
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The VFO/MR mode will only toggle on the current selected A/B/C/D line – while the other display lines
will remain on VFO or MR as they were selected.
This allows you to monitor channel and frequency mode simultaneously !
!
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Chapter!4.!–!Programming!Scanning!
Channels!
The BTECH GMRS-50X1 features 226 additional (256 total) memory channels that each can hold:
Receive frequencies, group signaling information, bandwidth, and a seven-character alphanumeric
identifier or channel name 1.
GMRS Channels (001-030) are hard loaded and cannot be removed. Settings such as the calling tone can
be edited on GMRS channels.
Channels 000, 031-225 can be added or deleted via computer or manual programming as additional
listen (receive) only channels.
Manual!programming!
To create a new scanning channel, start by switching your radio to Frequency (VFO) mode (Press and
Hold button from the microphone or use the V/M button on the front panel).
When in Frequency (VFO) mode, select your desired receive frequency using the numerical keypad.
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After that, use the menu system to configure the finer details of the channel you're wanting to program to
memory, such as bandwidth, CTCSS or DCS and more.
Adding Scanning Channels
The following steps assume that you're in Frequency (VFO) mode and that you've entered the desired
frequency to store to memory.
1. Press the key to enter the menu.
2. Enter 46 on the numerical keypad to get to MEM-CH.
3. Press to select.
4. Use the and keys to select an empty memory channel or enter it directly on the
numerical keypad.
5. Press the key to confirm.
6. Press the key to exit the menu.
Switch your radio to Memory (MR) mode by turning the radio OFF, and then Press and Hold button
while powering on to test your new channel. If you would like to name your channel you will need to do
that from a computer. More on that in the section called “Computer programming”.
!
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Computer!programming!
The Radio kit does not include a programming cable. To attain a PC cable please visit
https://BAOFENGTECH.com/accessories
Download programming software at https://baofengtech.com/ and find helpful guides at
http://www.miklor.com/ for more information on using the software
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Chapter 5. – Other Settings
Toggle from High, Mid, to Low Power
A quick press of the Microphone ‘#’ will alternate power levels from High, Mid, to Low power
*(Channels 15-30 Only)
Storing an FM Radio Station and Scanning
Use PC software to store FM radio channels names, you can name the FM channel and instead of
displaying the frequency your FM station will display the name. (software FM option (FM channels are
not stored, only the channel names are)) Press the microphone [*] Key to scan the FM radio.
Keypad Lock-out
Hold the microphone [# key] for 2 seconds at standby to turn on/off the keypad lock-out function. (The
Lock icon appears, when the radio is locked out)
PTT ID Setting
1. Use PC software to change PTT-ID code.
2. Set the Menu 18 settings on the radio to select the PTTID signal mode (2Tone, 5Tone, or DTMF),
3. Set the Menu 20 settings to select when the PTTID is transmitted.
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1209 Hz
1336 Hz
1477 Hz
1633 Hz
697 Hz
1 2 3
A -
770 Hz
4 5 6
B -
852 Hz
7 8 9
C -
941 Hz
* 0 #
D -
4. Set the Menu 21 settings to program the PTTID transmit delay time.
5.When all the settings are set, when you transmit (Press the PTT) The radio will transmit the PTTID.
DTMF RX Settings
This radio has DTMF coding and decoding. Use the PC software to set the DTMF signal settings first.
DTMF TX Settings
In two-way radio systems, DTMF is most commonly used for automation systems and remote control. A
common example would be in amateur radio repeaters where some repeaters are activated by sending
out a DTMF sequence (usually a simple single-digit sequence).
Table 7.1. DTMF frequencies and corresponding codes
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The BTECH GMRS-50X1 has a full implementation of DTMF, including the A, B, C and D codes. The
numerical keys, as well as the , and , keys correspond to the matching DTMF codes as you would
expect. The A, B, C and D codes are located in the , , and keys respectively (†).
Manually TX DTMF Tones: To manually send DTMF codes, press the key(s) while holding down the PTT
key.
Automatically TX DTMF Tones:
Save it to Memory and Transmit: You can also program a DTMF tone to the saved calling list (requires
the PC software) to the one of the 15 Memory call banks in the radio. To transmit select the Pre-set
DTMF saved setting on Menu 22 and then press the call key to send the saved DTMF TX tone.
Remote Stun
First set the DTMF Remote Stun Tone and Master Control ID in Software: When your radio receives the
DTMF Remote Stun Tone Sequence (Set by software) (Requires Menu 18 and 19 to accept DTMF
signaling) it will command the radio to disable transmitting abilities. The Master ID station must first
identify and send the PTTID (set in software as “Master ID”) – once the Master Station identifies itself,
the radio is set to receive command tones, if the Monitor Remote Stun tone is received - the radio will
no longer be able to transmit. Both the master ID station and remote stun signal must be set up in
software.
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Remote Kill
First set the DTMF Remote Kill Tone and Master Control ID in Software: When your radio receives the
DTMF Remote Kill Tone Sequence (Set by software) (Requires Menu 18 and 19 to accept DTMF signaling)
it will command the radio to disable transmitting and receiving. The Master ID station must first identify
and send the PTTID (set in software as “Master ID”) – once the Master Station identifies itself, the radio
is set to receive command tones, if the Monitor Remote Kill tone is received - the radio will no longer be
able to transmit or receive. Both the master ID station and remote stun signal must be set up in
software.
Remote Revive
First set the DTMF Remote Revive Tone and Master Control ID in Software: When your radio receives
the DTMF Remote Revive Tone Sequence (Set by software) (Requires Menu 18 and 19 to accept DTMF
signaling) it will reactivate the radio after it has been remotely stunned or killed. The Master ID station
must first identify and send the PTTID (set in software as “Master ID”) – once the Master Station
identifies itself, the radio is set to receive command tones, if the Monitor Remote Kill tone is received the radio will revived from a stun/kill command. Both the master ID station and remote stun signal must
be set up in software.
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Read More About Remote Commands
An In-Depth downloadable PDF is available at: https://baofengtech.com/support which details Remote
commands and how to use them. This Document Explains with examples on how DTMF remote
commands are used
DTMF Receive Settings, Transmit Setting (Call Key)
1. Press [MENU] Key select 18 OPTSIG, press [F] Key select DTMF function.
2. Press [MENU] Key select 22 S-INFO, press [F] Key select pre-code signal group (1-15). (The DTMF
Signal must be saved first in the PC software setting under DTMF settings.
3. If properly set up (on Menu 18 and 19), your radio will open the squelch when it receives the
required DTMF signal.
4. Press [Call] Key to send the same DTMF you have selected in Menu 22.
2TONE Receive Settings, Transmit Setting (Call Key)
1. Press [MENU] Key select 18 OPTSIG, press [F] Key select 2TONE function.
2. Press [MENU] Key select 22 S-INFO, press [F] Key select pre-code signal group (1-15). (The 2Tone
Signal must be saved first in the PC software setting under 2TONE settings)
3. If properly set up (on Menu 18 and 19), your radio will open the squelch when it receives the
required 2TONE signal.
34
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4. Press [Call] Key to send the same 2TONE you have selected in Menu 22.
5Tone Receive Settings, Transmit Setting (Call Key)
1. Press [MENU] Key select 18 OPTSIG, press [F] Key select 5TONE function.
2. Press [MENU] Key select 22 S-INFO, press [F] Key select pre-code signal group (1-15). (The 5Tone
Signal must be saved first in the PC software setting under 5TONE settings)
3. If properly set up (on Menu 18, and 19), your radio will open the squelch when it receives the
required 5TONE signal.
4. Press [Call] Key to send the same 5TONE you have selected in Menu 22.
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Scanning!modes!
The scanner is configurable to one of three ways of operation: Time, carrier or search, each of which is
explained in further details in their respective section below.!
Procedure 5.1. Setting scanner mode
1. Press the key to enter the menu.
2. Enter “17” on your numeric keypad to come to scanner mode.
3. Press the key to select.
4. Use the and keys to select scanning mode.
5. Press the key to confirm and save.
6. Press the key to exit the menu.
Time operation
In Time Operation (TO) mode, the scanner stops when it detects a signal, and after a factory pre-set time
out, it resumes scanning.
Carrier operation
In Carrier Operation (CO) mode, the scanner stops when it detects a signal, and after a factory preset
time with no signal it resumes scanning.
Search operation
In Search Operation (SE) mode, the scanner stops when it detects a signal.
36
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GMRS-50X1!
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To resume scanning you must press and hold the key again.
!
SKIP!Scanning!Channels!!
You can configure channels to be added or removed from the scanning list on the fly.
1. Press the key to enter the menu.
2. Enter Menu Item 16 on your numeric keypad to come to scanning add mode.
3. Press the key to select.
4. Use the and keys to select if the channel will be added or removed from the scanning
list. The change will apply to the current channel selected
5. Press the key to confirm and save.
6. Press the key to exit the menu.
!
Scanning!a!Frequency!Range!(VFO!Mode)!
The GMRS-50X1 can scan a user selected frequency range
1. Press and Hold for about 2 seconds
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37
2. The Display will show: RANGE ---:---
3. Enter the Frequency Range (In MHz) Desired
4. Example: 144:145
5. The Radio will scan the frequency range from 144.000MHz-145.9975MHz According to Your
Frequency Step (See Menu 1 Description)
Tone!Scanning!
Scanning for CTCSS and DCS Tones/Codes!
Scanning for a CTCSS tone or DCS code can be done while Frequency Mode (VFO) or
Channel Mode (MR) is selected. Only when VFO mode is selected, can the detected
tone/code be saved to menu 11/10.
CTCSS tone and DCS code scanning mode can be accessed with or without a signal being present.
The scanning process itself only occurs while a signal is being received.
Not all repeaters requiring a CTCSS tone or DCS code for access will transmit one back. In that
case, the transmitter of a station that can access the repeater would need to be scanned. In
38
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GMRS-50X1!
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other words: this would be done by listening to stations on the repeater's input frequency.
!
Scanning!for!CTCSS!Tone!!
(ACTIVE$SIGNAL$REQUIRED)$
1. Press the key to enter the menu.!
2. Enter on your numeric keypad to come to Menu 11: R-CTCS
3. Press the key to select. Insure you have a tone activated (and it is not off)
4. Press the to begin CTCSS scanning
A flashing "CT" will be in the left status display to indicate the radio is in CTCSS scanning mode. In this
mode, whenever the radio is receiving an RF signal on the selected MR channel or VFO frequency, the
lower display will cycle through the CTCSS tones as they are being tested. Once the frequency of the
received CTCSS tone is determined, the "CT" indicator will stop flashing.
Press the key to save the scanned tone into memory (VFO Mode Only) then press the key to
exit the menu.
Don't forget to set VFO menu 11 back to OFF when the CTCSS tone is no longer required.
!
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!
!Scanning!for!a!DCS!tone!
(ACTIVE$SIGNAL$REQUIRED)$
1. Press the key to enter the menu.!
2. Enter on your numeric keypad to come to Menu 10: R-DCS
3. Press the key to select. Insure you have a tone activated (and it is not off)
4. Press the to begin DCS scanning
A flashing "DCS" will be in the left status display to indicate the radio is in DCS scanning mode. In this
mode, whenever the radio is receiving an RF signal on the selected MR channel or VFO frequency, the
lower display will cycle through the DCS codes as they are being tested. Once the bits of the received
DCS code are determined, the "DCS" indicator will stop flashing.
Press the key to save the scanned tone into memory (VFO Mode Only) then press the key to
exit the menu.
Don't forget to set VFO menu 10 back to OFF when the DCS tone is no longer required.
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Dual, Tri, and Quad Watch (TMR)
!
In certain situations, the ability to monitor two, three or even four channels at once can be a valuable
asset.
The BTECH GMRS-50X1 features Dual, Tri, and Quad Watch functionality with the ability scan between
two-four frequencies at a fixed interval and to lock the transmit frequency to one of the four channels it
monitors
1. Press the key to enter the menu.
2. Enter “0” on the numeric keypad to get to the TMR Watch Settings
3. Press to select which channels are monitored (See Appendix A).
4. Use the and keys to enable or disable.
5. Press the key to confirm.
6. Press the key to exit the menu.
Due to the way the BTECH GMRS-50X1 is constructed, whenever one of the A, B, C, or D Frequencies
(VFO/MR) goes active, it will default to transmit on that channel for the time you have selected on
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Menu 52 – this can be turned off and is explained below:
Locking the Default transmit channel
1. Press the key to enter the menu.
2. Enter 52 on the numeric keypad to get to TMR-AB.
3. Press to select.
4. Select off, to turn off the TMR switching time.
5. Press the key to confirm.
6. Press the key to exit the menu.
7. The radio will now only transmit on the Main channel selected (The Main Frequency indicator
arrow will be pointing at the display set as primary)
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Chapter!6.!-!Selective!calling!
Sometimes when you're working with larger groups of people using the same channel, things can get
very crowded, very fast. To minimize this problem, several methods of blocking out unwanted
transmissions on your frequency have developed. In general, there are two forms of selective calling in
two-way radio systems: Group calling, and individual calling.
Group calling, as the name suggest, is a one-to-many form of communication. Every radio in your
working group is configured the same way and any radio will make contact with every other radio in the
group.
Individual calling, sometimes also known as paging, is a one-to-one form of communication. Every radio
is programmed with a unique ID code. And only by sending out a matching code can you get that radio
to open up to your transmissions.
The BTECH GMRS-50X1 features three additional ways of group calling
(2TONE, 5TONE, AND DTMF CALLING ARE FOUND IN CHAPTER 5):
• CTCSS
• DCS
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• Tone-burst (1000Hz, 1450Hz, 1750Hz, 2100Hz)
Using these features does NOT mean that others won't be able to listen in on your
transmissions.
They only provide a method to filter out unwanted incoming transmissions. Any
communications made while using these features will still be heard by anyone not employing
filtering options of their own.
You can change the CTCSS or DCS settings while in memory (MR) mode.
CTCSS and 1750Hz tone-burst are also popular methods among amateur radio operators to open up
repeaters.
!
!
!
!
44
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CTCSS!
CTCSS is set with menus 11 R-CTCS and 13 T-CTCS.
Procedure 8.1. CTCSS setup how-to
1. Press the key to enter the menu.
2. Enter on the numeric keypad to get to receiver CTCSS.
3. Press to select.
4. Enter desired CTCSS sub-tone frequency in hertz on the numeric keypad.
5. Press to confirm and save.
6. Enter on the numeric keypad to go to transmitter CTCSS.
7. Press to select.
8. Enter desired CTCSS sub-tone frequency in hertz on the numeric keypad. Make sure it's the same
frequency as that you entered for receiver CTCSS.
9. Press to confirm and save.
10. Press to exit the menu system.
To turn CTCSS off, follow the same procedure but set it to off with the key instead of selecting a CTCSS
sub-tone frequency.
For more information see the section called “11 R-CTCS - Receiver CTCSS” and the section called “13 T-CTCS Transmitter CTCSS” in Appendix B, Menu definitions.
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DCS!
DCS is set with menus 10 R-DCS and 12 T-DCS.
For a complete list of available DCS codes, see Table C.1, “DCS Codes” in Appendix C,
Technical specifications.
Procedure 8.2. DCS setup how-to
1. Press the key to enter the menu.
2. Enter on the numeric keypad to get to receiver DCS.
3. Press to select.
4. Scroll to the desired DCS code on the numeric keypad.
5. Press to confirm and save.
6. Enter on the numeric keypad to go to transmitter DCS.
7. Press to select.
8. Scroll to the desired DCS code on the numeric keypad. Make sure it's the same code as that you
entered for receiver DCS.
9. Press to confirm and save.
10. Press to exit the menu system.
To turn DCS off, follow the same procedure but set it to off with the key instead of selecting a DCS
code.
For more information see the section called “10 R-DCS - Receiver DCS” and the section called “12 T-DCS Transmitter DCS” in Appendix B, Menu definitions.
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1000Hz,!1450Hz,!1750Hz,!2100Hz!Tone-burst!
To send out a tone-burst; you simultaneously will press the PTT key while holding down the Call button.
To configure which Tone Burst is transmitted select the Tone Burst desired from Menu Item 50 (REP-S)
PTT + = Selected Tone Burst (Selectable in Menu 50: REP-S)
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Part!III.!How-to!and!setup!guides.!
Part$three$ covers$is$ a$collection$ of$how-to$ documents$to$help$ you$set$ up$your$
radio$for$ specific$working$environments.$
CHAPTER 7 CUSTOMIZATION
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Chapter!7.!-!Customization!
Text!Display!Colors!
The LCD on the BTECH Mobiles are backlit multi-color LEDs, the color of which can be pre-set from the
menu system into a variety of colors.
To change the colors, follow these steps:
1. Press the key to enter the menu.
2. Enter one of the following on your numeric keypad:
a. 33 to change the status icons text color
b. 34 to change the primary selected channel/frequency display text color
c. 35 to change the memory bank A (TMR-A) text color
d. 36 to change the memory bank B (TMR-A) text color
e. 37 to change the memory bank C (TMR-A) text color
f. 38 to change the memory bank D (TMR-A) text color
g. 39 to change the receiving privacy tone (decode) bank text color
h. 40 to change the current voltage bank text color
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i. 41 to change the bottom status bar text color
j. 42 to change the VFO/MR mode display color (to the right of the primary
channel/frequency)
k. 43 to change the menu display text color
l. 44 to change display color while transmitting on the primary display/TMR bank/and
microphone input volume
3. Press key to select.
4. Use the and keys to pick the desired color.
5. Press to confirm and save.
6. Press to exit the menu.
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Sync!Display!Channels!
To sync channels on the display (simultaneously display channel name and frequency), follow these
steps:
1. Press the key to enter the menu.
2. Enter 32 on your numeric keypad to come to the Sync Menu
3. Press key to select.
4. Use the and keys to select:
a. AB –To sync A/B Displays
b. CD – To sync C/D Displays
c. AB+CD – To sync both A/B and C/D Displays
5. Press to confirm and save.
6. Press to exit the menu.
Use SYNC in Conjunction with Menus 27,28,29 & 30 to coordinate what is displayed on each line (Name,
Frequency, or Channel Number) –See Appendix B Menu definitions
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0
TMR
Transmit Multi
Receive
OFF
This mode selects what displays are monitored in the
background besides the primary selected channel. You
can mix and match between all or partial channels to
allow dual, tri, and quad watch
Selected Memory + Displays (A, B, C, D)
M = Selected Memory
A = Display A
B = Display B
C = Display C
D = Display D
M+A
M+B
M+C
M+D
M+A+B
M+A+C
M+A+D
M+B+C
M+B+D
M+C+D
M+A+B+C
M+A+B+D
M+A+C+D
M+B+C+D
A+B+C+D
1
STEP
Frequency Step
Size Setup
2.5 to 25. kHz
2.5, 5, 6.25, 10, 12.5, 25 kHz
2
SQL
Squelch Level
00 > 09
10 squelch levels
00 = minimum / normally open
Appendix A. - Menu definitions
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3
TXP
Transmit Power
High
Full Power – 50W
Mid
Mid Power – 20W
Low
Low Power – 5W
4
AUTOLK
Auto Keypad
Lock
ON
Keypad Auto Lock Enabled
OFF
Keypad Auto Lock Disabled
5
TOT
TX Time Out
Timer
15 > 600 secs
15 second steps
6
APO
Auto Power Off
30 - 300
minutes
Time Set that radio will Power Off after last signal
received.
OFF
Turn off APO Option
7
WN
Bandwidth
Wideband
25.0 kHz
Narrowband
12.5 kHz
8
ABR
Unused Setting
Unused Setting
Unused Setting
9
BEEP
Keypad Voice
Prompt
ON / OFF
Turn ON / OFF keypad voice prompt
10
R-DCS
Receive - Digital
Coded Squelch
D023N > D754I
Squelch opens when proper DCS code is detected
OFF
No DCS code required
11
R-CTCS
Receive - Analog
Tone Squelch
67.0 > 254.1 Hz
Squelch opens when proper CTCSS tone detected
OFF
No CTCSS tone required
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12
T-DCS
Transmit - DCS
Code
D023N > D754I
Transmits specified code
OFF
No DCS code transmitted
13
T-CTCS
Transmit CTCSS Code
67.0 > 254.1 Hz
Transmits specified tone
OFF
No CTCSS tone transmitted
14
DTMFST
Determines
when DTMF
codes are heard
through speaker
OFF
No DTMF tone heard
KEY
Only manually keyed DTMF codes are heard
ID
Only automatically keyed DTMF codes are heard
BOTH
All DTMF codes are heard
15
BCL
Busy Channel
Lockout
ON
Prevents transmit if active signal on the channel
OFF
No lockout
16
SC-ADD
Add Scan
Channel
ON
Add channel to scan list
OFF
Remove channel from scan list
17
SC-REV
Scan Resume
Method
TO
(Time Operation) Scan stops when signal detected. The
scan resumes after approximately 5 seconds (even if
the channel is still active).
CO
(Carrier Operation) Scan stops when signal detected.
Scan resumes when signal disappears.
SE
(Search Operation) Scan stops when signal detected.
Scanning will not resume.
18
OPTSIG
Optional
Signaling
OFF
No optional signaling
DTMF
DTMF signaling selected
2TONE
2TONE signaling selected
5TONE
5TONE signaling selected
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19
SPMUTE
Speaker Mute
Settings
QT
Squelch opens for CTCSS/DCS tones only.
AND
Squelch opens when CTCSS/DCS tone is recognized
along with the optional signaling.
OR
Squelch opens when either the CTCSS/DCS tone OR the
optional signaling is recognized.
20
PTT-ID
PTT ID - When
to send
OFF
Do not send
BOT
Send at Beginning of Transmission
EOT
Send at the End of Transmission
BOTH
Send at both Beginning and End
21
PTT-LT
PTT ID Transmit Delay
0 > 30
Set Delay Time before transmitting PTT-ID
22
S-INFO
Auto Group
Dialing
Group Signal Code
Memory
1 > 15
Can only be set with software
23
EMC-TP
Alarm Mode
OFF
Alarm Mode Completely Disabled
ALARM
Turn on Alarm sound
ANI
Send Alarm code and ID code
BOTH
Both of the above
24
EMC-CH
Alarm Channel
000 > 255
Specified Alarm Channel
25
SIG-BP
Signal Beep
ON
Pager Ring at Reception of Matching
2Tone/5Tone/DTMF
OFF
Tone OFF
26
CHNAME
Channel Name
Edit
In Channel Mode, edits the Current Name
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27
CA-MDF
Channel A
FREQ
In Channel Mode, display the selected format in display
A
Display Mode
CH NAME
28
CB-MDF
Channel B
FREQ
In Channel Mode, display the selected format in display
B
Display Mode
CH NAME
29
CC-MDF
Channel C
FREQ
In Channel Mode, display the selected format in display
C
Display Mode
CH NAME
30
CD-MDF
Channel D
FREQ
In Channel Mode, display the selected format in display
D
Display Mode
CH NAME
31
LANGUA
Language
English
Screen Prompts Display
Chinese
32
SYNC
Display Sync
OFF
Separate A/B/C/D channel display.
AB
Synchronizes display AB, CD, or AB+CD
This allows the upper display to show channel name
while the lower shows the frequency. You can sync the
top 2, bottom 2, or both sections simultaneously
CD
AB + CD
33
ST-FC
Status Icons
Color
Select Color
WHITE, RED, BLUE, GREEN, YELLOW, INDIGO, PURPLE,
GRAY
Foreground
Color (Text)
56
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MF-FC
Primary
Selected
Channel
Select Color
WHITE, RED, BLUE, GREEN, YELLOW, INDIGO, PURPLE,
GRAY
Foreground
Color (Text)
35
SFA-FC
Display Channel
A Text
Select Color
WHITE, RED, BLUE, GREEN, YELLOW, INDIGO, PURPLE,
GRAY
Foreground
Color (Text)
36
SFB-FC
Display Channel
B Text
Select Color
WHITE, RED, BLUE, GREEN, YELLOW, INDIGO, PURPLE,
GRAY
Foreground
Color (Text)
37
SFC-FC
Display Channel
C Text
Select Color
WHITE, RED, BLUE, GREEN, YELLOW, INDIGO, PURPLE,
GRAY
Foreground
Color (Text)
38
SFD-FC
Display Channel
D Text
Select Color
WHITE, RED, BLUE, GREEN, YELLOW, INDIGO, PURPLE,
GRAY
Foreground
Color (Text)
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39
SUB-FC
Decode Tone
Text Color
Select Color
WHITE, RED, BLUE, GREEN, YELLOW, INDIGO, PURPLE,
GRAY
Foreground
Color (Text)
40
FM-FC
Voltage Text
Display Color
Select Color
WHITE, RED, BLUE, GREEN, YELLOW, INDIGO, PURPLE,
GRAY
Foreground
Color (Text)
41
SIG-FC
Status (Bottom)
Bar Display
Select Color
WHITE, RED, BLUE, GREEN, YELLOW, INDIGO, PURPLE,
GRAY
Foreground
Color (Text)
42
MOD-FC
Main Frequency
Mode/Channel
Number
Select Color
WHITE, RED, BLUE, GREEN, YELLOW, INDIGO, PURPLE,
GRAY
Foreground
Color (Text)
43
MENUFC
Menu Text
Display Color
Select Color
WHITE, RED, BLUE, GREEN, YELLOW, INDIGO, PURPLE,
GRAY
Foreground
Color (Text)
44
TX-FC
Transmitting
Channel Color
Select Color
WHITE, RED, BLUE, GREEN, YELLOW, INDIGO, PURPLE,
GRAY
Foreground
Color (Text)
58
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MENUFC
Unused Setting
Unused Setting
Unused Setting
46
TX-FC
Memorize
Channel
000 > 255
Indicates channel number to be stored.
47
DEL-CH
Delete Channel
000 > 255
Indicates channel number to be deleted.
48
SFT-D
Frequency Shift
Direction
OFF
UNUSED SETTING in GMRS-50X1
+
-
49
OFFSET
Frequency Shift
Offset Amount
00.00 > 69.99
UNUSED SETTING in GMRS-50X1
50
ANI
ANI ID Code
Can only be set with software
51
ANI-L
ANI Length
3, 4, 5
Length of ANI ID code
52
REP-S
Repeater
Activation Tone
1000Hz 1450Hz 1750Hz 2
100Hz
Audible tone for repeater activation
53
REP-M
Repeater
Forwarding
Mode (X-Band
Repeater with 2
BTECH Mobiles)
OFF
UNUSED SETTING in GMRS-50X1
CARRI
UNUSED SETTING in GMRS-50X1
CTDCS
UNUSED SETTING in GMRS-50X1
TONE
UNUSED SETTING in GMRS-50X1
DTMF
UNUSED SETTING in GMRS-50X1
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54
TMR-MR
TMR - Return
Time Delay to
Primary
Channel; Sets
the PTT to the
last received
transmission
channel. Time
delay selectable
OFF
Function OFF - Transmits always on Primary Channel
1 > 50 seconds
This is the delay time before returning to the primary
channel after secondary signal is clear.
55
STE
Squelch Tail
Elimination
OFF
Function OFF
Requires both
radios have
function ON.
ON
Eliminates squelch tail at end of transmission.
56
RP-STE
Repeater
Squelch Tail
Elimination
OFF
Function OFF
Requires a
repeater using
this function.
1 > 10
Delay Time
57
RPT-DL
Repeater
squelch tail
delay.
OFF
Function OFF
1 > 10
Delay Time
58
DTMF-G
DTMF Gain /
0 > 60
0 = Lowest Audio Gain
Audio Level
60 = Highest Gain
60
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MIC-G
Microphone
Gain /
0 > 127
0 = Lowest Audio Gain
Audio Level
127 = Highest Gain
60
SKIPTX
Quad Frequency
Operation:
Randomize
transmitting
channels - with
another
corresponding
mobile on the
same 4 channels
transmissions
can be spread
apart on the
four channels in
2 modes.
OFF
SKIP1
Randomizes in between after both transmitting and
receiving, requires both a received and a transmission
before going to another random frequency
SKIP2
Alternates transmitting on A, B, C, D - each PTT Press
the radio will transmit on the next channel in order of
their display (A-B-C-D-Repeat)
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61
SC-MOD
Automatic Scan
Resume Method
OFF
Scan is disabled with a Radio Reboot, or by Pressing a
Menu Key / PTT
PTT-SC
Scanning will resume after transmitting (or other Menu
Operations)
MEM-SC
Scan Memory during Radio Reboot: If scanning was
active when the radio was powered down, the radio
will resume scanning on restart. (Scanning also
resumes after transmitting or other Menu Operations)
PON-SC
Power on Scan: The radio will start scanning upon
turning on - no matter what state it was in when
powering down. Also, the radio will scan after Menu
operations or Transmitting
62
RESET
Initialize to
Factory Defaults
VFO
Menu Initialization
ALL
Menu and Channel Initialization
62
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GMRS-50X1!
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FCC!Notice!
NOTE: 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
connected.
- Consult the dealer or an experienced radio/TV technician for help
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63
Changes or modifications not expressly approved by the party responsible for compliance could void the
user's authority to operate the equipment. This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause
undesired operation.
WARNING: MODIFICATION OF THIS DEVICE TO RECEIVE CELLULAR RADIOTELEPHONE SERVICE SIGNALS IS
PROHIBIITED UNDER FCC RULES AND FEDERRAL LAW.
64
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GMRS-50X1!
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Appendix B. - Technical specifications
General
Specification Value
Frequency Range (MHz) 65-108 (Rx only)
136-174 (Rx)
400-520 (Rx)
GMRS Channels (Rx/Tx) (Channels 001-007, 015-030)
GMRS Channels (Rx Only) (Channels 008-014)
Memory channels 256
Frequency stability 2.5ppm
Frequency step (kHz) 2.5K/5.0K/6.25K/10.0K/12.5K/25.0K
Squelch Setup CARRIER / CTCSS / DCS / 5Tone / 2TONE / DTMF
Antenna impedance 50 Ohm
Operating temperature -20°C to +60°C
Supply voltage 13.8V DC±15%:
20A Peak GMRS-50X1
Dimension GMRS-50X1: 5.7(W) x 1.85 (H) x 7.5 (D)in; 2.2lb
Operating Temperature -5°F - +140°F
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65
Broadband
Narrow band
Sensitivity
≤0.25µV
≤0.35µV
Channel choice
≥70dB
≥60dB
Intermodulation
≥:65dB
≥60dB
Spurious Rejection
≥70dB
≥70dB
Audio response
+
1~-3dB (0.3-3KHz)
+
1~-3dB (0.3~2.55KHz)
Signal to noise ratio
≥45dB
≥40dB
Audio Distortion
≤ 5%
Audio output power
≥2W@10%
Broadband
Narrow band
Output power
50W/ 20W/ 5W - GMRS-50X1
Modulation Mode
16K F3E
11K F3E
Channel Power
≥70dB
≥60B
Signal to noise ratio
≥40dB
≥36dB
Parasitic harmonic
≥60dB
≥60dB
Audio response
+
1--3dB (0.3-3KHz)
+
1--3dB (0.3-2.55KHz)
Audio distortion
≤ 5%
Receiver
Receiver specifications
Transmit
66
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GMRS-50X1!
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Number
Code
Number
Code
Number
Code
Number
Code
001
D023N
002
D025N
003
D026N
004
D031N
005
D032N
006
D036N
007
D043N
008
D047N
009
D051N
010
D053N
011
D054N
012
D065N
013
D071N
014
D072N
015
D073N
016
D074N
017
D114N
018
D115N
019
D116N
020
D122N
021
D125N
022
D131N
023
D132N
024
D134N
025
D143N
026
D145N
027
D152N
028
D155N
029
D156N
030
D162N
031
D165N
032
D172N
033
D174N
034
D205N
035
D212N
036
D223N
037
D225N
038
D226N
039
D243N
040
D244N
041
D245N
042
D246N
043
D251N
044
D252N
045
D255N
046
D261N
047
D263N
048
D265N
049
D266N
050
D271N
051
D274N
052
D306N
053
D311N
054
D315N
055
D325N
056
D331N
DCS!table!
Table C.1. DCS Codes
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67
057
D332N
058
D343N
059
D346N
060
D351N
061
D356N
062
D364N
063
D365N
064
D371N
065
D411N
066
D412N
067
D413N
068
D423N
069
D431N
070
D432N
071
D445N
072
D446N
073
D452N
074
D454N
075
D455N
076
D462N
077
D464N
078
D465N
079
D466N
080
D503N
081
D506N
082
D516N
083
D523N
084
D526N
085
D532N
086
D546N
087
D565N
088
D606N
089
D612N
090
D624N
091
D627N
092
D631N
091
D627N
092
D631N
093
D632N
094
D645N
094
D645N
095
D654N
096
D662N
094
D645N
097
D664N
098
D703N
099
D718N
100
D723N
101
D731N
102
D732N
103
D734N
104
D743N
105
D754N
106
D023I
107
D025I
108
D026I
109
D031I
110
D032I
111
D036I
112
D043I
113
D047I
114
D051I
115
D053I
116
D054I
117
D065I 118
D071I 119
D072I 120
D073I 121
D074I 122
D114I 123
D115I 124
D116I 125
D122I 126
D125I 127
D131I 128
D132I 129
D134I 130
D143I 131
D145I 132
D152I 133
D155I 134
D156I 135
D162I 136
D165I
137
D172I
D174I
D205I
D212I
D223I
D225I
D226I
68
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GMRS-50X1!
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D243I
D244I
D245I
D246I
D251I
D252I
D255I
D261I
D263I
D266I
D271I
D274I
D306I
D311I
D315I
D325I
D331I
D332I
D343I
D346I
D351I
D356I
D364I
D365I
D371I
D411I
D412I
D413I
D423I
D431I
D432I
D445I
D446I
D452I
D454I
D455I
D462I
D464I
D465I
D466I
D503I
D506I
D516I
D523I
D526I
D532I
D546I
D565I
D606I
D612I
D624I
D627I
D631I
D632I
D645I
D654I
D662I
D664I
D703I
D712I
D723I
D731I
D732I
D734I
D743I
D754I
!
!
!
!
!
!
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69
Frequency
Frequency
Frequency
Frequency
67.0
69.3
71.9
74.4
77.0
79.7
82.5
85.4
88.5
91.5
94.8
97.4
100.0
103.5
107.2
110.9
114.8
118.8
123
127.3
131.8
136.5
141.3
146.2
151.4
156.7
159.8
162.2
165.5
167.9
171.3
173.8
177.8
179.9
183.5
186.2
189.9
192.8
196.6
199.5
203.5
206.5
210.7
218.1
225.7
229.1
233.6
241.8
250.3
254.1
CTCSS!table!
Table C.2. Default CTCSS Frequencies
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