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I have a digitech model DC-1120 CB radio, when I switch it on I get lights and CH 20 but for whatever reason I cannot change channels and none of the other buttons work either. Any clues?

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

wyoed1
  • 211 Answers

SOURCE: trc 447- has power but no channel switching

Do you have your channel switch ( the first switch to the left as you look at the front of the radio ) switched to a normal position ? If so, you may have a bad switch. Another problem could be a bad PLL Chip which is the frequency control device. I hope this helps.

As for the Guest post on the TRC-466, I would install a new mic first, as if there is a problem in the mic or cord, it will cause the sound to quit. Other than that, it would be a good guess that the audio chip is bad. Good Luck
Ed
NC Electronic
Mills, Wyoming

Posted on Jan 07, 2008

  • 13433 Answers

SOURCE: Radio Shack TRC-502 cb radio

Here is the owners manual I'l see if I can get my hands on a internal schematic

http://support.radioshack.com/support_electronics/doc62/62220.pdf

Posted on May 14, 2008

One Wire
  • 126 Answers

SOURCE: cb radios-galaxy dx99v

This has an LED channel display, which is the same as the Cobra 29. You can pick up a new one, there are a few color options available. You need to be very proficient with de-soldering and soldering small parts. You need a desoldering iron or desoldering wic, and no bigger than a 30 watt sodlering iron, any bigger can burn the foil trace, and some solder. You have to open the case, remove the faceplate screws, remove the faceplate, remove the channel selector/pcboard, and the channel display pc board together. Now you desolder the pins of the display, aproximately 20, remove the diplay, insert the new display observing direction (make sure it is face with the decimal to the right place), solder each pin to the pc board, and clip off the excess section of the pins (which is sticking out of the back of the channel display pc board. If you have changed to a blue display, you need to remove the orange or green cover, and replace it with a blue one (I make mine from blue transparant report covers) and hot glue it to the inside of the faceplate where the old one would have been. The reason for this is that the blue light will not shing blue thourgh a green or orange cover, and if you use clear, the display will be extremely bright, and the blue cover will knock down the glare a little. Now just put the radio back together and fire it up.

Now with that said, if you think you may have any trouble with this, you can take it to any cb shop and they should be able to help you.

Any more questions, don't hesitate to email me at rollincbmods@yahoo.com

Dean Pitts
Rollin CBs

Posted on Aug 31, 2008

  • 44 Answers

SOURCE: Cobra Cb handheld radio model: HH-35 doesn't work

Open up the back of the radio and check the solder joint from the antenna connector. I had same problem and it was this.

Posted on May 17, 2009

  • 1082 Answers

SOURCE: I need a manual for a Digitech DC-1010 handheld

Here's a clue.. http://users.tpg.com.au/adslui9k/category20_1.htm
Sorry ran out of time.. may revisit later.

Posted on Jan 24, 2011

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Hi Mitchell,

I own a Digitech DC1065 80 Ch CB HH, and no problems, so far.

Have you tried the Digitech website?

If so with no luck, may I suggest you join yahoo group specific to your radio Make/Model, there are experts with great info, plus you can download manuals, diagrams and software, etc.,,

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Hi David,

Before I try to give advice, I need more info.

I possess a Digitech DC1065 UHF 80 Channel CB hand held, so there seems to be some confusion here.

I live near Perth, Western Australia.

Firstly, How many channels does your radio have?

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Marine band is VHF with 87 Channels, in Australia that is, and the default channel is always 16.

Digitech are an Australian radio manufacturer, so you'll get great backup service.

If your radio is not defaulting to Ch16, then I am right about it being a UHF CB.

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I'm almost 100% sure this is a UHF CB in your possession.

Try this to prove me right please.

Reply to me with your Country and nearest city, I'll then be able to find a solution for you real quick, though I believe I already have.

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I hooked up my radio and when i push the mic the red antenna light came on so i grounded the radio better still did it changed the braket for the antenna still same thing changed antenna still samr thing...


It is important to tune your CB radio antenna to the proper length. The length must exactly match the wavelength of the frequency you transmit on. Or be really really close.

All Cb antenna's have a way to adjust the length of the antenna. If it's a mag mount, the metal whip can be slid in and out of a metal collar. Usually a set screw. If its a fiberglass whip, the way to tune it is on top. It either has a small metal rod with a set screw to adjust the length, or it threads in and out to adjust length.

Either type you have it will need to be adjusted for proper length. Here is how to tune the antenna to lowest SWR.

Some radios have a built in SWR meter. Some do not. If yours doesn't have an SWR meter, then you have to use an external SWR meter. Radio shack carries one, and you can find them cheap on ebay.

If you have a built in SWR meter or external, the procedure is the same:

1. Turn the radio to CH 20.(This is the center of the band.)
2. Switch the meter switch to CAL. (CAL stand for calibrate.
3. Key the radio. (Important. Do not talk while keying the radio.)
4. turn the CAL knob up until the meter hits the CAL mark.
5. Now while still keying the radio flip the meter switch to SWR.

Where the meter falls after that point is you SWR reading. If its above 3, that is real bad. 2 is not gonna kill your radio but its not the greatest. 1.5 and under is a good place to be, but the lower the better.

If your SWR is high, Here is how to find out if your antenna is too long or too short.

1. Turn to CH 1
2. Repeat SWR procedure. You must calibrate every time you do it.
3. Remember the SWR reading.
4. Turn to CH 40.
5. Again repeat SWR procedure.
6. Compare the reading between CH 1 and CH 40.

Now if the SWR is higher on channel 1 then channel 40 your antenna is too short. You must make it longer.

If the SWR is longer on channel 40 then on channel 1, then the antenna is too long, you need to make it shorter.

Make height adjustments about an eight inch at a time, and take reading each time.

once the SWR is significantly lower and the reading on channel 1 and 40 are about the same, you a about matched. At this point turn the radio to the center of the band, channel 20 and take an SWR reading.

You should now have a low SWR reading, 1.5 or under. If you are 1.5 or under, you are good to go.

If you cannot get the SWR to an appropriate level, there may be an antenna problem.

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