Question about Uniden GMR638-2CK (22 Channels) 2-Way Radio

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Uniden GMR1448-2CK The two don't communicate on same channel but on different channels by using the scan

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Re: Uniden GMR1448-2CK

Sounds like you have one units side channels set diffrent than the should be able to reset this by reverseing the battries in both units for a few moments then replacing them correctly. or remove battries for 24 hours or more to delete memory

Posted on Dec 13, 2007

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I have a uniden GMR1448 Two-Way Radio. Both handsets work but they cannot talk to one another. They used to work fine. They are tuned to the right channel and I did everything that I find obvious, like sub...

Check whether the channel and the sub code are same?If this is not same it will not work.
Put the sub code to off.Follow the below steps
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Press the channel/scan up or down arrow key to change3 the channel on either radio. Need the operating instructions? You can download/print them here:

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I inherited a uniden bearcat BC147xlt! How do I

I was unable to locate a manual, but this is a basic 16-channel scanner, and the frequency coverage is probably listed on the ID plate. To program, turn the scanner ON and use the MANUAL button to stop scanning and to advance the scanner to the channel that you want to program. Enter the frequency that you want to program, including the decimal, then push the E (Enter) key. Use the MANUAL key to advance to the next channel, and program as above.

For an extensive database of active frequencies in your area, visit

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Scan chennels

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Choosing the right frequencies for Uniden GMR1058-2CKB

Hello huko,

I see from your profile that you are in Bulgaria. Assuming that you are using the European PMR446 version of the Uniden radio in question, the channels / frequencies should be;

1 - 446.00625 MHz
2 - 446.01875 MHz
3 - 446.03125 MHz
4 - 446.04375 MHz
5 - 446.05625 MHz
6 - 446.06875 MHz
7 - 446.08125 MHz
8 - 446.09375 MHz
So, to operate on 446.09375 MHz you would chose channel 8.

If your radio has more then 8 channels, then you may have the U.S. version of the radio which operates on a different set of frequencies and does not have a channel that corresponds to 446.09375 MHz.

Best Regards,
Go Ahead. Use Us.

Mar 14, 2008 | Uniden GMR1058-2CK (7 Channels) 2-Way...

2 Answers

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First,we call this transciever as SRRS (Short Range Radio Service), it can communicate within 500 meters open range or no obstruction,now if the unit can't communicate each other within the range ,i would suggest to sent it to uniden service center......

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Two way radio cross model compatbility


Normally yes just as long as the frequency assignment to each channels are the same and no security/locking (such as (CTSS) is in place.

You have to check if the frequency settings of the Motorola matches those of the uniden.

Good luck and kind regards.

Oct 23, 2007 | Uniden GMR638-2CK (22 Channels) 2-Way...

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