Question about Cobra 25 LTD 40-Channels Base CB Radio

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No one hears me but I hear everyone else for miles.

Cobra ltd25, never had it serviced, 2 yrs old, never worked great.They hear me key the mike but not me talk.

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  • bobmiller00 May 24, 2009

    Thanks. HGow do you reprogram it?

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Check Your mic. Might need replacing. also with all the changes in the past few years check it out fully. If you can program it you might want to reprogram it. Hope that helps You.

Posted on May 24, 2009

  • Robert Lekfield May 24, 2009

    there should be a reset button on it somewhere.

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1 Answer

I can hear everyone talk to me but i cant transmit to them,they can hear me key up but no voice to them.i have checked all connections and grounds,still the same.


Mic may have audio wire broken in cord at mic plug wire solder connection.
Stock
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3- Transmit
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notice the numbers on the black plug after you pull it out of the radio.

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Check SWR with a meter, if its 1.1 to 1.5 then its fine no matter what the light says. The light can be adjusted inside to not light up until its very high(Its adjustable with a Variable knob inside) Get a Cb shop to check it out. I'd go for LIL Wilson 500 or 1000 antennas, I hear they are superb.

May 11, 2011 | Cobra 29 LTD CB Radio

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Have (2) Cobra 22 channel Micro talk radios that both just quit together. Only get static when tring to talk on them. Have (4) AAA rechargable in each one that show they are charged up. Both quit at the...


  • It is odd to see them both quit just like that. Were you messing with the buttons on one of them when it just quit? Did you happen to change one of the privacy channels on a main channel? The privacy channels isolate a main channel so you can talk on a channel without everyone with a radio hearing you. Make sure the channels on both radios are on only the channels and that no CTCSS or DCS code accidentally got added onto a channel. You should be able to tell by just looking at the screen and you will see the channel you are on and will also indicate a CTCSS or DCS code. Should you see either of them then remove them and retry the radio on a plain channel only.

  • Should this fail the you have got some major internal malfunction that happened to happen at the same time and it is time to invest in a new set of radios.


Regards, Tony

Apr 30, 2011 | Cobra 18-Mile, 22-Channel FRS/GMRS 2-Way...

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I have a Cobra 148 mounted on the hump in a pickup truck and it works fine. Then I plugged in a old Turner +3 desk microphone and I get bad feedback when it is keyed up and I can also hear my voice thru...


You're most likely getting lots of RF feedback from the metal cab of your truck,combined with the real sensitive nature of the amplified Turner mike.I would put an old original Cobra (coffin mike) handheld mike or a Astatic Roadking 56 (RK56) on it.They are really hard to beat,especially when you have lots of feedback & squealing. I also have a 148GTL (malaysia made) that has a Turner +3 deskmike & it squeals in my truck but not in the house. The 148GTL has given me better service than ANY other radio I've owned.It has 120 channels (freeband) & upper & lower sideband. I think mine is a 5pin Cobra-type plug-in. Try a simpler mike & good luck. Squirrly

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Just installed a new cobra 29 and new twin K40's w/ tunable tips. My truck is an 05 PETE 379 i have done all the tune steps instructions say but can only hear or broadcast 1/8 or 1/2 mile coax is the...


Hi troy, my name is John. Welcome to FixYa. Try running just one of the k40, in the center of your cab, make sure there is nothing blocking it. You will be amazed. Let me know how it goes. Thanks for choosing FixYa....John

Dec 03, 2010 | Cobra 29 LTD CB Radio

1 Answer

Key mike no hears me but shows meter


You didn't mention if you hear the other radio. If not, here's a common problem and solution.
That's usually a defective amc stage that produces RX audio and TX modulation. It's an integrated circuit that will require a tech fixing it. You will have a transmitted carrier with no modulation, and no sound in your speaker. However, make sure you have a good mike plugged in first, and substitute a known good mike to verify it's not the mike.
However, if you hear them, and they see your signal, but no talk (modulation), then the problem is usually your mike. Try another one in this case. Thanks, Bill

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No Transmitting, no RX sound, but can hear speaker click on...


Hi there!!

The symptom sounds like a bad Microphone connection or a bad microphone!! The Cobra has a built in circuit that wont allow you to hear anyone until the microphone is plugged in and the no transmit part will also do the same. Try another microphone that is wired right for that radio before you do anything else!! let me know!!

Dennis

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GREAT TRANSMISSION HARDLY NO RECEPTION


need to take it in to have the SWR set on antena

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Low volume and problems with squelch


Check your speaker for a short.

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Connex 3300 c.b radio


The Connex radio is a division of Cobra, and no offense, but Cobras are one of the cheapest radios around. The problem with your Connex is a simple receiver malfunction. The receiver probably worked great until it was put into storage for a long time, you can replace the receiver, or you can fiddle around with the receive gain until you hear something. But you may just want to send it to a radio store and have it looked at, to be honest with you, Connex is a terrible radio, they sound good, but they're terrible radios. Go with Galaxy or Uniden radios, you won't be disappointed.

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