This document introduces the features and characteristics of the Uniden GMR638 series of radios, including 22 channels and 38 CTCSS codes, as well as a range of up to 6 miles.
The Uniden GMR638 series is a lightweight, palm-sized radio designed for use on sporting events, hiking, skiing, and neighborhood watch duties. It supports both GMRS (channels 1-7, 15-22) and FRS (channels 8-14) frequencies, with range expectations of up to 6 miles for GMRS and 2 miles for FRS depending on conditions.
The device features a backlit LCD display, internal VOX circuitry, and 38 selectable CTCSS codes. Users can configure settings via a menu accessed by the 'sel/' key, allowing adjustments for battery level monitoring, channel scanning, keypad locking, and call tones.
| Channels (GMRS) | 1-7, 15-22 |
|---|---|
| Channels (FRS) | 8-14 |
| CTCSS Codes | 38 |
| Range (GMRS) | Up to 6 miles |
| Range (FRS) | Up to 2 miles |
The battery pack should be charged for 16 hours using the included charging cradle.
Yes, the GMR638 has a user selectable Voice Operated Transmitter (VOX) designed for use with a headset.