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All rights reserved. No part of this publication may be reproduced, distributed, or
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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
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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!
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Appendix B. - Technical specifications 64!
General 64!
Receiver 65!
Transmit
DCS table 66!
CTCSS table 69!
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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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GMRS-50X1!
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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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GMRS-50X1!
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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!
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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!
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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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GMRS-50X1!
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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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11
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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GMRS-50X1!
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GMRS-50X1!
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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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GMRS-50X1!
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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.