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

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1 radio wont receive the others transmission. they are on the

The radios are on the same channel. the only difference I see, is there is a 1 to the left of the little radio icon on the screen of the radio that is not receiving the transmission of the other radio.Is there a way to reset the radios? Thanks, and Happy Holidays!

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On this probablaby is a tone that has to be swithed off using the menu button and another up and down.use menu till 1 is flashing then press down till 1 says 0. this should fix problem

Posted on May 24, 2009

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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.

Feb 07, 2014 | Cobra LI3900-2DXVP (14 Channels) 2-Way...

1 Answer

Cobra frs 104


look in the battery compartment for a series of tiny switches under the batteries.. these switches must be identical for each radio..it puts them on the same frequency..then select channels with no interference..retry radios..

Jan 26, 2014 | Cobra FRS 250 (14 Channels) 2-Way Radio

1 Answer

Two sets of Motorola Walki Talki radios will not communicate.


In addition to the channel and privacy codes, some Motorola two-way radios have a feature called Eavesdrop Reducer where you have 3 scramble settings available; perhaps you have this set on one of sets of radios but not the other. It should be something like that because otherwise there is no reason that by setting the radios to the same channel and privacy code they wouldn't be able to send/receive to each other.

Nov 24, 2013 | Motorola Walkie Talkie 2-Way Radio

1 Answer

I cannot set QT filltering on..why?


Here are the instructions from the manual:

To transmit to a radio that has QT noise filtering turned on:

1. Select the same channel and Interference Eliminator Code as the other radio.

2. Press 'musical note' button to send a call tone. This allows your voice to pass through the QT

noise filter on the receiving radio.

3. Press the PTT and speak normally.

Note: If you skip step 2, the beginning of your message may not be heard on

the receiving radio.

For a 30-second period, starting after the last transmission, all transmissions
received on the selected channel and code will pass through the QT noise filter.

Also, your QT filtering will NOT work if you are in scan mode.

http://www.giantintl.com/RadioPDFs/Outdated%20Manuals/T56XX_57XX_User_Manual_E.pdf

Best regards.

Aug 06, 2011 | Motorola Talkabout T5720 (7 Channels)...

1 Answer

Walkie talkies model gmr325-2 ic;513C-UT914 HOW DO I GET THESE TO TRANSMIT, MY HUSBAND HAS CANCER AND WE NEED THEM IN OUR BEDROOMS AND WHEN I AM OUTSIDE, TK U, TK U


In order to get the most out of your new radio, read this reference guide completely before attempting to operate the radio.

Turning the Radio On and Adjusting the Volume

1) Press and hold the key to turn the radio ON.

2) To change the volume level press the volume/monitor up or down key to increase or decrease the volume level.

3) Press and hold the key to turn the radio OFF.

Adjusting the Sound (Key Beeps)

Your radio emits a beep each time one of the keys (except for the PTT button and call key) is pressed.
The sound of the Key Beep will increase or decrease depending on the volume level setting.

To turn OFF this beep:

Press and hold the call key while turning ON the radio.

To turn ON this beep:

Turn the radio OFF and ON again.

Choosing a Channel

Your GMR325-2 radio has 22 channels you can use to talk to others. In order to speak to someone,
each of you must be set to the same channel.

To choose a channel:

Press the channel/scan up or down key to increase or decrease the channel number displayed.

Channel Scan Feature

Your GMR325-2 radio has a channel Scan feature that allows you to easily Scan all 22 channels. When an active channel is detected, the unit will pause on that channel until the channel is clear. Then after a 2 second delay, the unit will continue scanning.

Pressing PTT button while the Scan is paused on a channel will allow you to transmit on that channel.

To turn ON channel scanning:

Press and hold either the channel/scan up or down key. The channel number on the display
will rapidly cycle through the channels.

To turn OFF channel scanning:

Press either the channel/scan up or down key.

Talking on Your Radio

To talk to others using the radio:
1) Press and hold the PTT button and speak in a clear, normal voice about 2-3 inches away from the microphone.

While you are transmitting the tx icon is displayed. To avoid cutting off the first part of your transmission, pause slightly after pressing the PTT button before you start talking.

2) When you are finished speaking, release the PTT button.You can now receive incoming calls. While receiving, the rx icon is displayed.

Transmitting a Call Alert Tone

Your GMR325-2 radio is equipped with a call tone that will be transmitted when the call key is pressed.

To transmit the call alert tone, press the call key.

The tone will automatically be transmitted for a fixed length of time.

Auto Squelch Feature

The GMR325-2 is equipped with an automatic squelch system which shuts off weak transmissions
and unwanted noise due to terrain conditions or if you have reached your range limit.

Monitor Mode Feature

Your GMR325-2 radio allows you to listen for weak signals on the current channel at the press of a key.

To turn ON monitor mode:

Press and hold the volume/monitor up or down key. The rx icon will blink.

To turn OFF monitor mode:

Press the volume/monitor up or down key. The rx icon will stop blinking.

Automatic Power Save Feature

Your GMR325-2 has a unique circuit designed to dramatically extend the life of the batteries. If there is neither transmission nor an incoming call within 2 seconds, your radio switches to the Power Save mode. The radio is still able to receive transmissions in this mode.

KEYLOCK ON/OFF

Press and hold the call key until the "L" appears. After 1 second, the LCD will return to the channel display.
To exit Keylock on mode, press and hold call again.

Note: While in keylock on mode, it will still receive transmissions.

ROGER BEEP

Roger Beep is a BEEP that is sent to notify the end of transmission.
Roger Beep can be heard through the speaker when Key Beep is on.
Roger Beep is transmitted even if key beep is turned off. However Roger Beep will not be heard from the speaker.

To turn OFF Roger Beep: Press and hold the channel/scan up Key while turning on the radio.

Jun 21, 2011 | Motorola Walkie Talkies 2-Way Radio

1 Answer

I have 4 radios. Initially they all worked together. Now , een on the ame frequency , they do not all pick up the signal? Any ideas why?


These are FRS/GMRS radios. You may have different privacy codes set on the radios. If a receiving radio has a different privacy code than a transmitting radio, you will not hear the transmission. This allows many people to share the 22 channels, but only hear transmission from their party.

Nov 11, 2010 | Cobra 22 CHANNEL 2-WAY RADIOS

1 Answer

Only get static when trying to receive transmission


Turn the squelch knob eathier up or down to eliminate the static.

Oct 14, 2008 | Audiovox FR2302 2-Way Radio

1 Answer

The talkabout t5500 and the t5725


Hello bella-9,

The T5500 is a 2 channel radio and the T5725 is a 14 channel radio. However, the radios should be compatible with each other on FRS channels 1-14 as long as both radios are using the same Quiet Talk code. If the Quiet Talk settings are different the radios will not be able to communicate with one another.

Assuming all settings are the same (as you say) and the units are within range of each other (typically less then a mile over clear, level terrain) they should work just fine.

Best Regards,
Ken
"Go Ahead. Use Us."

Jul 16, 2008 | Motorola Talkabout T5720 (7 Channels)...

2 Answers

Problem transmitting


Hello jayhawkrx,

Check the Continuous Tone Coded Squelch (CTCSS) settings on all the radios. (Note that some manufacturers refer to this feature as a Privacy Code or Quiet Code. The actual name of the feature may vary.) This feature encodes a low-frequency signal on your radio transmission. This signal is below the range of human hearing but can be detected by other radios. When the CTCSS feature is active your radio will ignore any signal that it receives that does not have the proper tone encoded on it.

In order for these radios to communicate, all of the radios need to be on the same channel and have the same CTCSS code programmed or the CTCSS feature must be disabled.

I suspect that CTCSS is activated on one of your radios but not on the other. This would result in the situation you describe.

Also take note that when using different brands / models of radios to communicate with one another that the CTCSS code numbering scheme may not necessarily be the same from radio to radio. For instance, CTCSS code 4 on the Motorola TalkAbout series actually corresponds to code A on the Motorola Sport models.

Best Regards,

Agent Ken
Go Ahead. Use Us.

Mar 09, 2008 | Motorola Talkabout T5720 (7 Channels)...

1 Answer

Motorola t5000


If you have already checked both radios have the same code and channel both radios must reicive and transmit between each other check if you have any QT in any display this is a third condition to reicive.

Jun 06, 2007 | Motorola TalkAbout T5000 2-Way Radio

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