Question about Cobra Mr F45 Fixed Mount Vhf

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My squelch is not working i have real good antenna it works a little bit after it has been on a hour or so ma buddy has same radio same antanna i cam talk to him but i cannot hear him unless ihave squelch all the way counter colckwise

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Possible that the modulation section has a fault associated with deterioration of electrolytic capacitors. It can also be related to dry soldering of the board that gets connected as the set warms up. I will recommend that the boarrd be checked , suspected joints soldered to confirm if this can be the issue of the Squelch circuit.

Please click for some tips on slow start of circuits.

Some click for some soldering tips;

Posted on Nov 08, 2010


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Posted on Jan 02, 2017


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1 Answer

I have a cobra frs 120 that is squelching all the time

Squelching can be a sign of a bad or poorly charged battery, or it could be a sign of RF (radio frequency waves) in the environment where the radio is located, or lastly the radio could be in need of repair.
1st check your batteries. Trade with a known good radio and see if it clears up the problem. If so, replace the battery pack. It might also be wise to check your antenna for weather checks or other signs of an aging sheath, this too can cause squelching. Lastly, try setting all your radios to a different PL code to see if it will block the interference.

Best regards

Sep 19, 2014 | Cobra MicroTalk FRS 120 (14 Channels)...

1 Answer

Cannot receive info on weather channels

What model scanner? Where are you located? Make sure "squelch" control is turned to where you hear static, then turn it back just a little bit so that the static goes away; then you should be able to scan for WX channels if you have the antenna on the radio. Let me know more info to try and help you more.

Feb 21, 2013 | Radio Communications

1 Answer

When i transmit if the other vehicle is anything over a mile away they get a lot of static. I can receive them clearly at up to 5 miles. What do I do to get better transmission? I have a K40 antenna...

Well if they are not hearing you over a mile but you hear them over 5 miles that is a good indicator that your antenna is working properly but your radio is not getting out there. First go ahead and check the TX knob. Turn it all the way to the right so you modulate as much as the radio will allow. Next turn the squelch knob all the way to the left until you hear static and then turn it to the right slowly until the static noise goes away. Some don't mind the continual static but I like to squelch it out. The TX being turned to the right will allow your radio to work at full capacity. If you still don't get reports much over a mile then you can try a power mike to help you out a bit. Your microphone could have seen it's better days and can for sure mess up your transmit. Make sure your SWR is low 1:1.5 is the goal not to exceed 2. If all that checks out then have it peeked /tuned and aligned by a tech. Good luck to you.

Feb 06, 2011 | Cobra 29 WX NW ST 40-Channels Base CB...

1 Answer

I can hear clearly when someone is about 30 yards away but nothing after that and my voice is garbled to my buddy whats up with that

Hi, my name is John. Welcome to FixYa. Check that you have a good ground on your antenna and that nothing is blocking the rod (element) any metal or any objects, set the squelch to max. Check your SWR on the antenna. If you need further assistance, let me know, always glad to help you. Thanks for choosing FixYa....John

Oct 28, 2010 | Cobra 19 DX IV CB Radio

1 Answer

I got a cobra 29classic cb, little hours. i have

Set the squelch and knob to full counter-clockwise position. Turn the volume up to the 1/2 way point. Disconnect the external speaker plug from the jack. Disconnect any PA speaker plug from jack. Static / voices should be heard from internal speaker. If not disconnect the mic. Static / voices should be heard. If not, tune a different channel, sound should be heard. if not, look for indication of the radio stuck in transmit mode. If in transmit, there will be no sound until you can stop transmitting (hopefully while connected to a 50 ohm dummy load or suitable antenna - otherwise the final transistors may be blown). Reconnect accessories to determine problem component.

Good luck!

Mar 12, 2010 | Radio Communications

1 Answer

How do i set my knobsso my radio works

Turn the volume up about 1/3, the squelch off or fully counterclockwise. You should now hear static or talking,if not something is wrong with the radio. As a last resort change to channel 19 and see if it is dead as well. None of this is valid unless you have a proper antenna connection. When you are receiving then adjust the volume to a comfortable level and turn the squelch up, clockwise, until it just mutes when no one is talking. The higher the squelch the stronger the signal has to be to be heard.
Good Luck,

Dec 01, 2009 | Cobra 148 GTL 120-Channels Base CB Radio

1 Answer

Uhf radio cb tranciever

Hello Are You using the correct antenna?,when you turn the squelch down do you hear static sound?, are you using squelch codes? if it is just a CB radio that works on Citizen Band (11 Mts) this radios does not have squelch codes.

Let me know the brand, model of the radio.

Dec 18, 2007 | Radio Communications

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