Question about Garmin Rino 120 2-Way Radio

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Radio Mic My mic seems to stay hot. I can talk and people can hear me but I cannot hear anyone else. Help me please:)

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Check the squelch on your radio thats not recieving. If there is a monitor button ( when pushed you will hear static) try pushing it.. then get someone to call you so you can check if you can hear them. On these radios you have 2 types of squelch....1 is called carrier squelch.... it basically opens when there is a strong enough signal. This lets you only hear strong signals and "squelch out" the distant ones and background static. The2nd. is "tone squelch" ... with your radio they are often called privacy tones. If you have 2 radios set with the same privacy tones you will only be able to hear each other... only radios that are transmitting with that privacy tone will be heard on your radio. Its a high frequency tone that can't be hear by the human ear that gets "embeded" with the transmitting signal. The recieving radio hears it and opens the squelch. So... if the radio thats rxing (recieving)your signal has its squelch set for just carrier squelch it will hear any signal thats strong enough to break the squech open.... basicaly any radio within a certain range. But if your radio (one with problem) has its squelch set for privacy tones you will not hear any other radios except the ones set with the same privacy tone.... the squelch will not open until it gets a tx signal with the right tone.... so if the txing (transmitting) radio is not using tone squelch but is using carrier squelch.... and the rxing radio is set for tone squelch... the rxing radio will not hear it. With tone (privacy tones/codes) squelch you need a tone to open the squelch and then the audio can be heard... with carrier squelch the squelch will open if ANY radio is within a certain range. Check the squelch setting on the problem radio... it could have a privacy tone set. Try pushing in the monitor button so you can hear static ( you want to hear everything including static) on both radios... tx on one radio at a time and listen if it can be heard on the other with the monitor button pushed. If you can't hear any audio when the broken one is transmitting then it COULD be the mic.... if you can hear both radios with the monitor button activated than the radios are txing and have tx audio and are working... if thats the case its the privacy tones that are the problem. Take care

Posted on Sep 12, 2007

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1 Answer

I have a radioshack TRC 496 cb radio and can't find a replacement microphone but if I had a wire schematic or the pins identified I could possibly wire a different mic into it. Can anyone help me out?


Try this link, it may be of help The CB Radio Talk Forum • View topic - microphone<radio ... www.cbradiotalk.com/viewtopic.php?f=32&t=15385
  • Last updated: Dec 30, 2007 ·
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I have a trc 496 rat shack 40 chnl cb, it has a modular jack on the mic which plugs into it<like a phone jack>, anyone know where I can get a mic like this preferably ...

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I have my radio hooked up in my jeep and i can hear other people talk but it seems that they cant hear me talking. Its all hooked up right. i checked to see if there was a tuning thing on it and there...


Turn up "MIC GAIN" also check and see if it keys up full scale 4 watts on output meter. If that doesn't do it change MICS. Go for a power mic by cobra that runs off say a double AA battery. It may be conditions also or your out of range of persons. check Antenna,Swr reads (should be 1.1 to 1.5)on a Radio Shack meter. Try it all.

Jun 11, 2011 | Cobra 19 DX IV CB Radio

1 Answer

Radio transmits fine but the receive volume is way down. Can hardly hear it with volume turned up full.


If you have talk back in this radio.( you hear your self through the radio when you transmit) then its a good bet that the RX wire in the mic plug has broken off.

The mic switch is responsible for putting the radio into receive mode when you release the key. If the RX wire is broken, the radio will not go into receive.

Normally when this happens you have no receive at all no matter what, but you will have very low sound if you have talk back installed in the radio.

Because of this, if you have talk back in your radio, and the volume is faint even at full blast, its a good bet that its a broken RX wire in the mic cord or plug.

You can attempt to see if the break is at the mic plug. if it is, you can re solder it and it will solve your problem. If you have no clue, then you can just go buy new 4 pin mic.

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1 Answer

When I depress the transmit button the cb puts a squel out to other radios on the same channel yet I have no problem hearing transmissions from the other radios


It sounds like the mic either has a problem, or its wired incorrectly for that radio.

Try a new mic, and make sure it's wired for that radio.

Also, if you have talk back then it's too loud, or your mic gain is too high.

The type of radio would help me know weather or not it could be the mic wiring.

Oct 20, 2010 | Radio Communications

1 Answer

Can't talk to anybody, but can hear them just fine.


Could be a few things.One as simple as a bad soilder on the board or your voltage regulator could have went out. If you take the top cover off and talk in the mic and its starts transmitting then you have a bad soilder to check the regulator is a little harder and not for just anyone to do.

May 06, 2010 | Cobra 25 WX-NW-ST 40-Channels Base CB...

1 Answer

My Cobra 29 LTD sometimes does not work even though the lights remain on. In other words I can't talk on it or hear anyone even though it appears to be operational


Your mic or mic jack is faulty. Try a different mic. In cobra 29's and some other variants, when you disconnect the mic, the audio is disabled. It will still receive, and transmit(possibly) but you will hear nothing from the radio.

It could be,
  • Broken wire on the back of the mic jack in the radio.
  • Broken wire in the mic cord.
  • Disconnected wires in the mic for the switch.
  • Dirty mic connection pins.
Most likely the problem is with the mic, and not the radio.

Oct 21, 2009 | Cobra 29 LTD CB Radio

1 Answer

Logitech premium usb headset 350 help me pretty please


If when you talk into your mic you hear yourself from speakers...open your volume control(windows) and check the box to mute mic. Not for sure this is a fix to your problem but from what you wrote is similar to problem seen with voice chat software.

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Hannah montana mmicrophone


I found this on Yahoo:

I Have The Directions Here
1. for best proformance please note the following
a. place the FM radio in an area of minimal nosie and interference
b. do not set vol to max
c. has to be within 15 ft
d. hear your own voice, will not be brodcasted over the radio
e. in some areas, all frequencies in 92 to 106 FM range could be occupied by a local radio station. in this rare case, your mic will not be functional
3. move mic close to radio while tuning, tuning into frequnecy may take practice. may need to move your radio dial slowly and sing or talk in to the mic

Buttons on the mic:
A.... Applause
S.... DJ Scracth Efeect
M.... Mic
Source(s): Hanna Montana FM wirless mic instruction manual

Feb 10, 2008 | Audio Players & Recorders

1 Answer

Cant talk through mic


Sounds like a bad or miswired mic. Try a new mic ( use the proper cobra mic ). If the problem still continues, check all the swiches on the front of the radio and make sure you don't have any cold solder joints ( broken lead to board connections ). Good Luck
Ed
NC Electronic
Mills, Wyoming

Dec 19, 2007 | Cobra 29 WX NW ST 40-Channels Base CB...

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