Question about Cobra 19 DX IV CB Radio

1 Answer

I have a Cobra 19DXIV, it has been working fine with my "little Willy" antenna, but today on a job I was tranmitting fine but could not receive. The bar showed that someone was talking, but I could not hear. Any ideas?

Posted by Michael A Ruby on

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1 Answer

wdes_151

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  • Contributor
  • 7 Answers

Check squelch and wires to the speakers

Posted on Jul 03, 2014

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5 Related Answers

Anonymous

  • 3 Answers

SOURCE: Cobra 29 LTD Classic not transmitting or receiving

ant. light should only come on if you have a high vswr a bad thing did you check that cb/pa switch is set to cb check your swr this is not a good place to mount ant. as it is close to metal of back of cab

Posted on Dec 24, 2008

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s60six

  • 328 Answers

SOURCE: cobra 25 ltd wx classic

the mics on these cobras have a receive wire in them so the transmit will still work even if the receive wire is broken,if this wire is broken the unit will not make any sound...........remove the plug from the radio end of the mic and check the connections on the 5 pin connector.....(could be a cold solder or broken wire) or try a new mic or one that is proven work on another radio
hope this helps.................good luck!

Posted on Dec 25, 2008

Anonymous

  • 2 Answers

SOURCE: cobra classic 29 ltd

Had fixed the same problem yesterday. My cobra worked when it wanted to, when it didn't it looked like you explained. I found out that on my cobra the blue wire on the mike connector was broken. When it disconnects, no sound. after soldering, everything works fine.

Posted on Jan 06, 2009

Anonymous

  • 1 Answer

SOURCE: Cobra 29 LTD Classic not transmitting or receiving

As I understand from a tech friend of mine, most truck beds are not grounded well enough. Perhaps you could borrow/purchase a magnet mount antenna and locate it on the roof, for testing. Then you would have it narrowed down to the location.

Posted on Jan 07, 2009

Anonymous

  • 6966 Answers

SOURCE: cobra 142 gtl no audio on receive

Hi and welcome to FixYa,

Initially, the speaker of course has been checked?

Offhand, would partial schematic of the mic and speaker section help?

7008f3b.jpg

Good luck and thank you for asking FixYa.

Posted on Dec 20, 2009

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How to increase the receive on a cobra 25ltd classic

1,if your antenna is not properly tuned you may be loosing receive as well as power 2,how your swr? 3 you may want to purchase a little driver with a built in receive amp.
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Will not tranmitt

need more information but it could be a number of things.someone could have clipped the wrong diode to give it more modulation.Does it recieve at all? How about your antenna SWR , is it resonably low ? Is your power level low due to the tx problem?
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How can I make the 19DXIV VHF capable

There is no way to make that radio VHF capable, CB radio's operate in the AM band, and most, if not all VHF radio's operate in the FM band. CB radio's are not capable of VHF frequencies either, VHF is considered around 40MHz and above, CB radio's operate between 26.965 MHz and 27.405MHz that is considered 11 meter band HF. CB radio's are not broadbanded enough to cover anything that far away, expecially the newer radio's, as most of them are controlled via a microcontroller and PLL tuning circuit. the 19DXIV is a great little radio, but will never be able to operate in or even around VHF. sorry.
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How do I reset my Cobra 19DXIV CB radio to factory Settings

If you are ask that vague a question you should not open case. However that is your business.

pages 14, 15, 16 http://www.cbtricks.com/radios/cobra/19dx_iv/graphics/cobra_19dx_iv_sm.pdf
and of course all the tools listed in the link.
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Reception is very poor. Grounding issues? Please

Reception has little to do with grounding. The ground plan is for transmitting. As long as the coax is connected and is in good standing, it should receive fine regardless of grounding.

There are a few reasons you may have bad reception.
  1. Turn the RF GAIN all the way up. This is your receive sensitivity.
  2. Squelch is too high. It should only be turned up enough to cut out the background noise.
  3. Poor antenna. If the antenna is cheap, and not made well, this could be the problem.
  4. Not enough of the antenna above the vehicle. It needs to be at least 60% of the antenna above the vehicle.
Hope this helps!
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Cobra 29 LTD Classic not transmitting or receiving

ant. light should only come on if you have a high vswr a bad thing did you check that cb/pa switch is set to cb check your swr this is not a good place to mount ant. as it is close to metal of back of cab
0helpful
1answer

Cobra 29 LTD Classic not transmitting or receiving

As I understand from a tech friend of mine, most truck beds are not grounded well enough. Perhaps you could borrow/purchase a magnet mount antenna and locate it on the roof, for testing. Then you would have it narrowed down to the location.
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Tranmitting

one of the units may have a bad mic element. Can you hear the speaker unmute when the radio is keyed?
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