B-Tech GMRS-20V2 User manual

Copyright © 2022 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-20V2. THIS
RADIO WILL DELIVER INSTANT RELIABLE COMMUNICATION.
PLEASE READ THIS MANUAL CAREFULLY BEFORE USE

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Contents'
Part I. Chapter List ................................................................................................................. 1!
Chapter 1. – Getting Started .................................................................................................. 2!
Unpacking and Inspecting ................................................................................................................. 4!
......................................................................................................................................................... 5!
GMRS-20V2: Overview of the Front Panel ......................................................................................... 6!
Remote Speaker Jack Info ................................................................................................................. 7!
GMRS-20V2: Overview of the Rear Ports .......................................................................................... 8!
Handheld Mic Keys Explanation ........................................................................................................ 9!
Handheld Mic Keys ICON Explanation ............................................................................................. 10!
Programming Cable Info ................................................................................................................. 11!
Antenna Basics ............................................................................................................................... 12!
Ground Plane: ..................................................................................................................................................... 12!
Antenna Requirements ...................................................................................................................................... 13!
Chapter 2. - GMRS Information and FCC Declaration ............................................................ 15!
GMRS Repeaters ................................................................................................................................................. 15!
FCC NOTICE AND DECLARATION ......................................................................................................................... 15!
FCC LICENSE REQUIRED FOR GMRS OPERATION ................................................................................................ 16!
GMRS Frequency Chart, Channel Guide ............................................................................................................. 17!

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Chapter 3. – Basic Shortcuts and Use .................................................................................... 18!
Pound # Key ....................................................................................................................................................... 18!
Star * Key ........................................................................................................................................................... 18!
Turning the unit on ............................................................................................................................................ 18!
Turning the unit off ............................................................................................................................................ 19!
Adjusting the volume ......................................................................................................................................... 19!
Making a call .................................................................................................................................. 20!
Channel selection ........................................................................................................................... 20!
Channel mode .................................................................................................................................................... 20!
Chapter 4. – Programming Scanning Channels ..................................................................... 21!
Manual Programming ..................................................................................................................... 22!
Adding GMRS Channels ...................................................................................................................................... 22!
Adding Receive/Scanner Channels ..................................................................................................................... 23!
Deleting Channels ............................................................................................................................................... 24!
Computer programming ................................................................................................................ 24!
Chapter 5. – Other Settings ............................................................................................... 25!
Toggle from High to Low Power ......................................................................................................................... 25!
Keypad Lock-out ................................................................................................................................................. 25!
PTT ID Setting ..................................................................................................................................................... 25!
DTMF RX Settings ............................................................................................................................................... 25!
DTMF TX Settings ............................................................................................................................................... 26!
DTMF Receive Settings, Transmit Setting (Call Key) ........................................................................................... 27!

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2TONE Receive Settings, Transmit Setting (Call Key) ......................................................................................... 27!
5Tone Receive Settings, Transmit Setting (Call Key) .......................................................................................... 27!
Scanning modes ............................................................................................................................. 29!
Time operation .................................................................................................................................................. 29!
Carrier operation ............................................................................................................................................... 29!
Search operation ................................................................................................................................................ 29!
SKIP Scanning Channels .................................................................................................................. 30!
Tone Scanning ................................................................................................................................ 30!
Scanning for CTCSS and DCS Tones/Codes ......................................................................................................... 30!
Tri Watch (TMR) ............................................................................................................................. 33!
Chapter 6. - Selective calling ................................................................................................ 35!
CTCSS ............................................................................................................................................. 37!
DCS ................................................................................................................................................. 38!
1000Hz, 1450Hz, 1750Hz, 2100Hz Tone-burst ................................................................................. 39!
Part III. How-to and setup guides. ........................................................................................ 40!
Chapter 7. - Customization .................................................................................................. 41!
Text Display Colors ......................................................................................................................... 41!
Sync Display Channels .................................................................................................................... 42!
Voice Operated Xmitter (VOX). ....................................................................................................... 43!
Appendix A. – Menu Definitions .......................................................................................... 44!

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FCC Notice ...................................................................................................................................... 54!
Appendix B. - Technical specifications .................................................................................. 56!
General .......................................................................................................................................... 56!
Receiver .............................................................................................................................................................. 57!
Transmit ............................................................................................................................................................. 57!
DCS table ........................................................................................................................................ 58!
CTCSS table .................................................................................................................................... 61!

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Part I. Chapter List
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)
Exposure to Radio Frequency Energy
Your BTECH radio is designed to comply with the following national and international standards and guidelines regarding

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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.
What’s in the Box
GMRS-20V2
Mobile Radio
Microphone
Power Cable (Direct Connect)
Mounting Screws Mounting Bracket
and Fuse

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5

6
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GMRS-20V2: Overview of the Front Panel

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Remote Speaker Jack Info
This is the pinout of the speaker jack. It follows the TRRS wiring- you can run a cable from this jack into
the AUX port on your car stereo if you desire. Then place the stereo in the AUX Input mode to hear the
radio audio. CAUTION- This is NOT a MONO speaker jack. It does require you follow the pinout below.use
caution if plugging an external speaker directly in this jack.

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GMRS-20V2: Overview of the Rear Ports

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Handheld Mic Keys Explanation
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Handheld Mic Keys ICON Explanation
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Programming Cable Info
PC-04 Cable available at: www.baofengtech.com/accessories
Programming software available at: www.baofengtech.com/download

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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
Ground Plane:
Antennas require an appropriate ground plane to properly work. This can be a car body (not a fiberglass
car body, but some metal), or a set of ground radials for homebrewed antennas or commercially
designed antennas which do not require an external set of radials.
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. This is usually accomplished
via the metal car body. Magnetic Antennas do NOT function properly on Plastic or fiberglass bodies.

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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 ground plane or ground radial kit.
CAUTION: When installing base antennas, stay clear of ALL power lines- they can kill you if you come
in contact with them. Keep a minimum distance of 10 feet with the antenna and yourself from the
lines.
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 Accurate 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). You will need to use a SWR meter
designed for the UHF band. Other meters will NOT read correctly. Another option is an “Antenna
Analyzer”. With those you can sweep the entire UHF band and find the “sweet spot” or resonant point
of your antenna. Use this information to tune for the LOWEST SWR or reflected power reading.
!!

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Chapter!2.!-!GMRS!Information!and!FCC!
Declaration!
THE$BTECH$GMRS-20V2$IS$FCC$PART$95E$CERTIFIED$FOR$GMRS$USAGE$
THE$GMRS-20V2$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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