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

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Uniden 2 way radio rx stuck on - Uniden GMR638-2CK (22 Channels) 2-Way Radio

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Posted on Jan 02, 2017

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Shuttle83
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SOURCE: Faulty Uniden UHO38SX-2, RX on all the time

Hello jbt3143, Here is a way to find the component that is causing the problem. open up the unit and then turn it on until the problem occurs. Then using freeze spray go in vertical lines from bottom to top of the circuit board until the problem clears. Not the section that causes the symptoms to go away and the by narrowing down the field you should come to one component, replace that component and the retest by turning the unit on and letting it heat up again. I hope this helps, Thank you, Shuttle83 http://www.electron-age-technologies-llc.com

Posted on Jun 12, 2009

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  • 1 Answer

SOURCE: Uniden uh064sx-2 2-Way RX Stuck On

Didyou have any luck resolving this issue? We currently have exactly the same problem

Posted on Apr 15, 2010

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1 Answer

How to get rx off screen


This model has a "Monitor Mode" feature that allows you to listen for weak signals on the current channel at the press of a key.
1.) To turn ON monitor mode:
Press and hold the volume/monitor up or down key. The rx icon will blink.

2.) To turn OFF monitor mode:
Press the volume/monitor up or down key. The rx icon will stop blinking.

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1 Answer

Stuck on rx mode


Rx is an abbreviation for receive. (Tx is transmit) There are a variety of reasons a radio will be "stuck" in Rx:
1) Another radio in the group is stuck in transmit and you cannot reply if your radio is receiving the other radios transmission.
2) Your radio is programmed for Rx only.
3) Your radio has a Tx problem such as a bad mic, or something covering the mic opening.
4) Your battery is low or bad. It takes more energy to Tx than to Rx.

Best regards.

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1 Answer

Uniden uh064sx-2a constant rx


Press PTT and see its break receiving. Also change the Rx frequency or change the channel which not receiving, adjust the squelch level.

Dec 28, 2013 | Uniden GMR638-2CK (22 Channels) 2-Way...

1 Answer

Uniden pc76xl low rx problem


MAKE SURE R-F GAIN IS TURNED UP FULLY AND ANTENNA IS NOT SHORTED

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1 Answer

My uniden walkie talkie has the RX button stuck on the screen i can talk to the other person but it always makes a screeching noise


Hi Laura,

When you see the Rx sign on the screen, it indicates that someone else is transmitting (Tx) on the channel, this is also caused by "BOOF HEADS" who like doing nothing more than dropping carriers by holding down their PTT button during a conversation, something that happens a lot on CB and without a doubt on FRS radios.

There is no problem in your radio, it's Just someone else probably dropping a carrier as per above.

Not much can be done about this problem, No License, No Joy.

The fact you can hear the other person over the screach indicates to me that I am right, and your radio is fine.

I hope this clears up your query.

Warm Regards,
Peter

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1 Answer

I have a Uniden/President hr2510 and would like to wire a DM452 echo mic to this radio. I need the proper code.


They are bother a simple 4 pin wire setup. Follow this and you will be good to go. 1 - GROUND SHIELD - BLACK
2 - AUDIO - WHITE / YELLOW
3 - TX - RED
4 - RX - BLUE

Jan 16, 2011 | Uniden Bearcat Pro PC68XL 40-Channels Base...

1 Answer

My UH043SX-2 seems to be stuck on RX, I can talk on it but not hear an answer.


We have 6 of them all with the same problem. Uniden says to turn off holding down the mon and scn buttons. Then hold down the mon and scn buttons together for 20 secs. Then turn on holding down the mon and scn buttons at the same time. Then turn off and turn on again. This should clear the problem. It didn't for me so I threw them away and bought some more. I think that would have been easier than all the other stuff!

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1 Answer

Uniden pc68xl does not tx or rx. all lights comes on. I have no schematics to work with.


Try to change a 1k resistor R6(I believe) near back of radio. If not, try to change Final. Maybe small transistors near center back to back of radio. If you're not experienced take it to a Radio shop. Sorry i don't have much on this problem.

Jan 05, 2010 | Uniden PC68XL (40 Channels) 2-Way Radio

1 Answer

Uniden uh064sx-2 2-Way RX Stuck On


Didyou have any luck resolving this issue? We currently have exactly the same problem

Aug 05, 2009 | Uniden GMR1038-2 (7 Channels) 2-Way Radio

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