Motorola Mobile Two Way Radios 25W Base Station GM3188

Frequency Range: VHF 136-174MHz; UHF 403-470MHz
Storage Channel: 8
Dimensions: 44mm x 169mm x 118mm
weight: 1.01kg


1. Features

New Commercial Series Mobiles ( which includes the GM3188 ) are small in size and budget but built to last. The series comprises four models across 3 frequencies.

The entry-levelGM3188 model in the series - a compact 8 channel radio


- Die-cast metal chassis

- Meet EU Directives (CE, R&TTE, Automotive Directive)

- All radios benefit from  rigorous build quality - passing the US MIL 810 C/D/E and IP54 requirements, as well as its own 5 year accelerated life testing programme.


- One of the smallest mobiles available

- H 44mm x W 169mm x D 118mm

- Weighting approximately 1kg

Ease of use

Multi-function programmable buttons

Clearly arranged buttons

Copy Rx-to-Tx button - transfers RX parameters to the TX parameters

Installation Versatility

The Commercial Series mobile radios( which includes the GM3188 )are truly DIN mountable and offer a number of other mounting options.

To protect against theft, a removable slide mount allows regular, quick and easy removal of the radio when not in use. For added security, the keylock mount guards against unauthorised removal. A desktop tray with integrated speaker is also available for use in an office or control room.

GM3188 Features:

• Selective calls

• Hi/Lo power selection

• Emergency mode

• Call Tone Tagging allowing the user to select one of 8 alert tones

• Repeater Talkaround

2. Specifications



Channel Capacity


Typical RF Output

Low Power UHF and VHF

 1-25 W

High Power UHF

25-40 W

High Power VHF

25-45 W


136-174 MHz; 403-440 MHz, 438-470Mhz

Power Supply

13.8 Vdc (11 Vdc - 16.6 Vdc) negative vehicle ground

Channel Spacing


Frequency Stability


Dimensions (HxWxL)

44mm x 169mm x 118mm


1.01 Kg

Operating temperature

- 30 to + 60°C


Passes rain and dust testing to IP54

Shock and Vibration

Meets MIL-STD 810-C,D&E and TIA/EIA 603



136-174 MHz;403-470 MH

Channel Spacing

12.5 kHz/ 20/25 kHz

Frequency Stability

± 0.5 ppm

Sensitivity (12db Sinad)

VHF  :

0.35uV (12.5KHz)

0.3uV (25KHz)


VHF:                 UHF

65dB (12.5KHz)       60dB  (12.5KHz)

75dB  (25KHz)         70dB (25KHz)

Adjacent Channel Selectivity

65dB  (12.5KHz)        60dB (12.5KHz)

75dB  (25KHz)         70dB (25KHz)

Spurious Rejection

75dB                  70dB

Rated Audio

4W internal

13W external

Audio Distortion @ Rated Audio

3% (typical)

Conducted Spurious Emission

57 dBm < 1GHz

-47dBM > 1GHz


Modulation Limiting

+/-2.5KHz (12.5KHz)

+/-4KHz (20KHz)

+/-5KHz (25KHz)

FM Hum and Noise

-40 dB (12.5KHz)   -35 dB  (12.5KHz)      -40 dB (12.5KHz)

-45 dB (25KHz)     -40 dB  (25KHz)       -40 dB (25KHz)

Conducted / Radiated Emission

1-25W    36 dBm < 1GHz -30 dBm > 1GHz

25-40/45W    -26 dBm

Adjacent Channel Power

-60 dB (12.5KHz)

-70 dB (25KHz)

Audio Response

+1, -3 dB

Audio Distortion @ 1000Hz, 60% Rated Max. Deviation

3% typical

3. Shipping

4. Payment

EEC. accept online payment method--Paypal, which takes data encryption technology to make Paypal pay safe enough, so customers no need to worry about the private infomation betraied. And Paypal is convenient for customers and sellers to trade. Seller could send Invoice first to customer for making payment. To avoid customers do not know how to make payment.

Offline payment also be accepted -- Telegraphic Transfer (TT), Western Union, MoenyGram which is convenient, reasonable, simple and Global.