Question about Galaxy Radios DX-959 40-Channels Base CB Radio

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Just purchased a new galaxy dx959. Coax and k40 10k watt antenna. Installed it in my peterbilt 379. I have a lot of background noise. I tried unhooking the coax from back of radio and the noise goes away. So I figure its not coming through the power cord. What can I do about this? Also can I turn up my vr 14 and vr 16 and get more audio?

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You probably have the 959 that has a MOSFET final. It is not recommended that you try to get more power/mod by just turning pots. This can shorten the life of the MOSFET drastically. I normally set the power output to 7 watts and the mod to 100%. This give around 30 watts peak on AM and around 25-30 watts sideband. You need proper test equipment to align the radio.

As far as background noise, this type of radio does have more that others. Make sure the Noise blanker and ANL are turned on. If you are getting noise from equipment in the vehicle, you should take your truck to a good CB shop. They can find out what is causing the noise and fix it.

....Don at NTCB, Inc.

Posted on Jun 29, 2011


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The problem is that the V73 has a very sensitive receive. It is picking up noise in the car. Most likely the smog pump, or fuel pump.

Here are a few things you can try.

First, lets make sure where the noise is getting into the radio. It will either be getting in via the power wire, or the antenna.

To find out, here is what you do.

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If when you take the antenna wire off the back of the radio, the noise goes away, then the noise is getting in via the antenna system. Solutions for this could be any of the following.
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To find out if the noise is getting in from the coax, or antenna.
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  2. Disconnect the coax from the antenna if you can.
If the noise goes away, it is the antenna. Try a new antenna. If the noise doesn't go away, its most likely bad coax.

Now if when you disconnect the antenna wire, the noise is still there, then the noise is getting in through the power wire.

Here are some things you can do to get rid of the noise.

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