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No output I just got a new Cobra 200 GTL DX. It got the CB frequencies added to it. The night I got it I hooked it up to my buddys antana and I could hear people talking. I installed it in my truck and now I get nothing. I tried to calabrate my antana but I am barly putting out 1 watt on low power.

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Re: No output

If you antenna SWR are way out ( too high ) you may have burrned the final or driver up when you hooked it up to do the antenna adjustment. Also be sure to turn the high power switch on to adjust the antenna SWR or the SWR meter won't read correctly, if the RF power is too low. Good Luck
NC Electronic
Mills, Wyoming

Posted on Jan 06, 2008

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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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Hello i have a yaesu ft-2900 it receives just fine but when i transmit it shows error. this radio is brandnew

Hi Gerald,

When you say you used the software to download frequencies, do you mean as in from the internet, or did you have to input frequencies via the software on your PC?

There is a difference, that's the reason I ask.

If, by using the software you manually input the frequencies, then did you input both the output and input frequencies or just output for each channel?

If the latter is true, and you are trying to access another user via a repeater, then that is the error.

Repeaters generally, require both the input frequency = the frequency you transmit on, and the output = the frequency you receive on.

Without both frequency pair, you won't be getting out, and no won can hear you, as you are basically transmitting as a simplex station on a repeater allocatted channel, hence the error message on your display.

The radio you have is used by many amateurs & CB operators, and both group utilise repeaters within their allocated spectrum, excluding 27 meg CB, which is simplex only, but with SSB included.

I hope this answers your query.

Best regards,

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1 Answer

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You would be surprised how little people actually talk on CB radios these days. I went through similar struggles a few years ago. Unless you are in a major trucker area, the CB radio is basically silence.
Check out the weather channels (anything on the WX setting) to make sure that your radio is receiving frequencies correctly. If that doesn't work, then it is your box, but I bet that will work.
Good luck!

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I believe it is either the wire for the back lighting or the wire to hook up to a switched ignition in a car so that the CB comes on when you turn on your vehicle.

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The Cobra microTALK PR-3500-2 DX VP Radios are supposed to be equipped with acoustic noise filters that are built in the microphone. This problem could have been caused from the radios getting wet, damaged, or the microphone going bad, the microphone can be replaced if you still have the warranty, but if you want to save money you may wan to get a new set of 2-ways. I suggest the Uniden GMR325-2, these models are inexpensive and have an approximate 5 mile range in good conditions.

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2 Answers

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1 Answer

Cobra set up

Hello John;
You can ground both the antenna mast and the antenna. your best bet is to place an 8ft grounding rod in the ground from radio shack or local two-way radio shop. Then connect the grounding rod to your mast. You can get a polyphaser from your local two-way radio shop this will connect between your antenna and the radio. it will also be grounded to the grounding rod. This should leave you in pretty good shape.

Happy DXing


Apr 03, 2008 | Two-Way Radios

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