I'm hoping someone here could give me some help on the problem I'm having with my CB. I'm using a Cobra 29 Classic and seems to be getting electrical interference from using other electrical items in my truck. Like when I turn on my wipers, you hear the interference in the CB radio from the motor. When the blades move, you hear it. Their are other things that cause interference but the wiper motor is the most annoying. What is causing this ? Ground on the antenna ? or do I need to install a filter on the hot lead to the radio ? Any ideas or suggestions is welcome. Thanks BTW, it's a Freightliner Columbia tractor RT
thats not good.....try a noise filter like was suggested above, I have never had any luck with them though..
I forgot to mention in my story and if this helps any. If I turn down halfway my RF gain on the CB, the noise goes away.
Those have an anl and noise blanker swith on them Down Is off, middle is anl only, and top is nb. I run a Columbia now, and have for a while, several of them. Never had much problem with wiper motor noise, sounds like you may have that trouble. The AM in the in dash radio isn't good, and there is noise present on that that I can't get rid of, also has very poor reception compared to what I'm used to. RF gain gets rid of audio noise on the CB for me, too, has to be really quiet before I can run it wide open, and then you can hear them twice as far as they can hear you, and more if they are running power.
Hiya. I answered an identical thread about six weeks ago with lotsa details about how to determine how the noise is entering the CB and where to go from there. In brief, if you can take the coax connector off the back of the radio and the noise goes away, then no amount of power line filtering at the radio is going to fix it, as the noise is being transmitted like a low power radio signal. In that case, and since it's a company truck, ask the mechanics to install bypass capacitors right at the DC input to the wiper motors. So-called "RF noise" must be suppressed at its origin. You may also find that the windshield washer pump does the same thing, and the fix is the same. It's commonly found anyplace where sparks occur, like on motors that have brushes. If I were a little more familiar with this forum's format, I'd find my original (similar) replies to someone and link them here, but I've summarized it in this post. Hope that helps, -- Handlebar --
Click on you username in the top right of the screen and that will take you to your profile. Click on statistics, then click on find all posts by ( Insert your name ) and then you can look back at your previous posts by the most recent first. Hope this helps.
I already looked there, and it only goes back three weeks, the posts he is thinking are farther back. It only shows the last 100 posts.
