20 Most Recent Uniden GMR-1558 / 2CK 2-Way Radio Questions & Answers


Hello,
It would seem the radio has found it's way to monitor mode. What this does is monitor for more weaker signals. You can undo this easily.
  1. All you will need to do for this is press the "mon" button and this will return you to normal mode.
  2. The "rx" (receive) icon stops blinks and disappears.
  3. You will now have normal functions of your radio.

Regards, Tony

Uniden GMR-1558... | Answered on Apr 24, 2011


If you are using it as a 2way then you should just have to set to the proper channel.

Uniden GMR-1558... | Answered on Jan 20, 2009


Hello Dave2794875,

According to manufacturer specifications the NiMH rechargeable batteries should provide about 12 hours of operating time assuming a 90/5/5 operating cycle (90% standby, 5% receive, and 5% transmit). Theoretically, decreasing the volume can help somewhat but should have a minimal effect.

If you are only seeing two hours of standby time then you are definitely not getting the specified amount of time. This could be indicative of a problem with the charger or the battery pack or both.

Using disposable alkaline AAA batteries, you should see an increase in operating time because alkaline batteries have more capacity and last longer then rechargeable batteries. However, if yu do a lot of operating the cost of disposable AAAs can add up fast. For most users the rechargeable batteries are much less expensive in the long run. If you only use the radio occasionally then alkaline batteries are the way to go.

Hope this helps,
Ken
"Go Ahead. Use Us."

Uniden GMR-1558... | Answered on Jul 28, 2008


Determine if this is a VOX problem or a headset problem.

Turn off the VOX. Does the headset work for normal transmit and receive?

Remove the headsets. Do the radios work normally on speaker?

Plug one headset in And test with the (other) radio in speaker mode. Does it work? Now turn on VOX in this mode (yes it will work this way). Does vox work (put you mouth right on the mic)
If so swap headsets and try the other.

If one Hset works but not the other its the headset. If neither works its likely the radio ..but before you decide try the same headset experiment on the other radio. Find out which of the 4 devices the problem follows.

Happy New year

Uniden GMR-1558... | Answered on Jan 01, 2008


It all depends on the location. Being VHF and not using a repeater or external antenna, the range is likely less than 10 miles. Using a repeater you might get 50 miles or more. If you are thinking long range communications, you really need an HF transceiver. VHF is essentially for local communications.

Uniden Radio... | Answered on Nov 10, 2019


I have Manuals with the update Sheet $14.95 each (706)270 3829

Uniden Radio... | Answered on Sep 17, 2019


If you get clear audio when close to the receiver, it would appear to be a problem in either the antenna or the receiver. Try a different antenna or relocate the antenna. If you adjusted the VSWR low it doesn't mean the power is radiating correctly. Verticals should be on roof, with roof as ground plane. Mounting on mirrors is ok, but doesn't work as well. Also, if you have sheet metal near the antenna, it acts as a ground reflector and can distort or block the waveform. You might also try it with a different receiver, in case yours has a faulty pre-amp stage. It could also be a power amplifier problem in the transmitter, where it shows 5 watts but isn't putting out that amount. You can check it with an RF watt meter.

Uniden Radio... | Answered on Jul 01, 2019


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Jan 6, 2014 - trying to wire a dm-452 4 pin mic to a 5 pin uniden washington -Uniden Bearcat Pro PC68XL ... SOURCE: trying wire a superstar dm-452.

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Uniden Radio... | Answered on Jun 29, 2019

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