B-Tech GMRS-50V2 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,
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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-50V2. THIS
MULTI-BAND RADIO WILL DELIVER INSTANT RELIABLE
COMMUNICATION.
PLEASE READ THIS MANUAL CAREFULLY BEFORE USE

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Table&of&Contents& &
Part 1. Getting started ............................................................................................................ 1!
Chapter 1. – Getting Started ................................................................................................... 2!
Unpacking and Inspecting ................................................................................................................ 4!
GMRS-50V2: Overview of the Front Panel ........................................................................................ 6!
GMRS-50V2: Overview of the Rear Ports .......................................................................................... 8!
Hand Held Mic Keys and Description .............................................................................................. 10!
RJ45 Audio and Accessory Jack ....................................................................................................... 11!
Color Display and Icon Descriptions ................................................................................................ 13!
Antenna Basics ............................................................................................................................... 16!
Ground Plane ...................................................................................................................................................... 16!
Antenna Requirements ...................................................................................................................................... 17!
Chapter 2. - GMRS Information and FCC Declaration ............................................................ 19!
GMRS Repeaters ................................................................................................................................................. 19!
FCC NOTICE AND DECLARATION ......................................................................................................................... 19!
FCC LICENSE REQUIRED FOR GMRS OPERATION ................................................................................................ 20!
GMRS Frequency Chart, Channel Guide ............................................................................................................. 21!

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Chapter 3. – Basic Shortcuts and Use .................................................................................... 22!
Microphone Keys ........................................................................................................................... 22!
Pound # Key ....................................................................................................................................................... 22!
Star * Key ........................................................................................................................................................... 22!
Front Panel Buttons (Keys) ............................................................................................................. 23!
V/M ..................................................................................................................................................................... 23!
Call ...................................................................................................................................................................... 23!
H/L Lock .............................................................................................................................................................. 23!
FM ...................................................................................................................................................................... 23!
EXIT A/B/C/D ...................................................................................................................................................... 23!
General Operation ......................................................................................................................... 24!
Turning the unit on ............................................................................................................................................ 24!
Turning the unit off ............................................................................................................................................ 24!
Adjusting the volume ......................................................................................................................................... 24!
Making a call ................................................................................................................................. 25!
Channel selection .......................................................................................................................... 25!
Frequency (VFO) mode ...................................................................................................................................... 25!
Channel (MR) mode ........................................................................................................................................... 26!

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Monitor Both VFO & MR Modes ..................................................................................................... 27!
Chapter 4. – Programming Scanning Channels ..................................................................... 28!
Manual programming .................................................................................................................... 28!
Adding Scanning Channels ................................................................................................................................. 29!
Adding a NOAA Channel ................................................................................................................ 30!
NOAA Weather Channels ................................................................................................................................... 30!
Adding GMRS Channels .................................................................................................................. 31!
Computer programming ................................................................................................................ 31!
Chapter 5. – Other Settings ............................................................................................... 32!
Toggle from High, Mid, to Low Power ................................................................................................................ 32!
Storing an FM Radio Station and Scanning ......................................................................................................... 32!
Radio Lock .......................................................................................................................................................... 32!
PTT ID Setting ..................................................................................................................................................... 32!
DTMF RX Settings ............................................................................................................................................... 33!
DTMF TX Settings ............................................................................................................................................... 33!
Remote Stun ....................................................................................................................................................... 34!
Remote Kill ......................................................................................................................................................... 35!
Remote Revive .................................................................................................................................................... 35!
Read More About Remote Commands .............................................................................................................. 36!

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DTMF Receive Settings, Transmit Setting (Call Key) ........................................................................................... 36!
2TONE Receive Settings, Transmit Setting (Call Key) ......................................................................................... 36!
5Tone Receive Settings, Transmit Setting (Call Key) .......................................................................................... 37!
Scanning modes ............................................................................................................................. 38!
Time operation ................................................................................................................................................... 38!
Carrier operation ............................................................................................................................................... 38!
Search operation ................................................................................................................................................ 39!
SKIP Scanning Channels .................................................................................................................. 39!
Scanning a Frequency Range (VFO Mode) ....................................................................................... 39!
Tone Scanning ............................................................................................................................... 40!
Scanning for CTCSS and DCS Tones/Codes ......................................................................................................... 40!
Dual, Tri, and Quad Watch (TMR) ................................................................................................... 43!
Chapter 6. - Selective calling ................................................................................................ 45!
CTCSS ............................................................................................................................................. 47!
DCS ................................................................................................................................................ 48!
1000Hz, 1450Hz, 1750Hz, 2100Hz Tone-burst ................................................................................. 49!
Chapter 7. - Customization .................................................................................................. 50!

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Text Display Colors ......................................................................................................................... 50!
Sync Display Channels .................................................................................................................... 51!
Appendix A. - Menu definitions ........................................................................................... 53!
FCC Notice ...................................................................................................................................... 64!
Appendix B. - Technical specifications .................................................................................. 66!
General .......................................................................................................................................... 66!
Receiver .............................................................................................................................................................. 67!
Transmit ............................................................................................................................................................. 67!
DCS table ....................................................................................................................................... 68!
CTCSS table .................................................................................................................................... 71!

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Part 1. Getting started
Part 1 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
CHAPTER 7. - CUSTOMIZATION

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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 (~13.8VDC); do not use incorrect or higher voltage (e.g., 24VDC)

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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.
What’s in the Box
GMRS-50V2
Mobile Radio
Microphone RJ45 to K1
Audio Cable
Power Cable (Direct Connect)
Mounting Screws Mounting Bracket
and Fuse

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GMRS-50V2: 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/Select Key (Press) +Main
Selector (Menu Knob)
4. Monitor function
5. FM radio On/Off 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
: when in standby, press to send caller ID
(ANI) in the selected signaling mode; while
transmitting, press to send activate signaling.
: press to turn off the squelch, repeat to
turn on the squelch.
: press to switch between channel mode
(Memory) and frequency mode (VFO).
: 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
RJ45%Connector:!

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GMRS-50V2!
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GMRS-50V2: 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. TRRS Line Out: Includes
PTT/Microphone/Audio-out/GND
4. Cooling Fan
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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 or item
3 “DOWN”: Lower frequency or item
4 “EXIT/AB”: Exit, AB channel switch, and alarm
function
Alarm Activate (Long Press)
5 “*/SCAN”: Scanning function
6 “#/LOCK”: High / Low Power Toggle, Lock
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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RJ45 Audio and Accessory Jack
The Second Generation BTECH Mobiles Include audio output from the RJ45 jack to easily connect and control
audio I/O through external accessories. Included inside your kit is a RJ45 to K1 Adaptor cable. This cable allows
compatibly with K1 accessories popular with our handheld series radios.
The RJ45 Audio output is controlled in conjunction with Menu 64 on the radio. You can prioritize audio out through
the speaker and mic on the radio, out through the RJ45 port, or allow audio I/O on both the radio and the RJ45
port.
Audio Settings Example
MENU 64: EARPHO
1. Audio I/O: Radio Only
a. Menu 61: Set to Off
2. Audio I/O: RJ45 Jack Only
a. Menu 61: Set to EAR
3. Audio I/O: Radio & RJ45 Jack
a. Menu 61: Set to EAR+SP

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RJ45 to K1 Connector Wiring Diagram
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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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Icon
Description
Icon
Description
Ico
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Description
Channel allowed to TX and RX
DCS Enabled (TX, RX or Both)
Positive Offset (Freq. Mode)
Channel set to Narrowband
Transmit Power: Low
Negative Offset (Freq. Mode)
Channel set to Wideband
Transmit Power: Mid
Offset Enabled (Chan. Mode)
Channel Reverse Enabled
Transmit Power: High
Keypad is Locked
2Tone Calling Enabled
CTCSS Enabled (TX, RX or
Both)
5Tone Calling Enabled
Battery Strength
(Weak Battery Indicator)
DTMF Calling Enabled