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Old 02-15-2010, 09:00 PM   #1
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Engine Noise

I just installed a Uniden CB over the weekend, it went surprisingly well. My only problem seems to be excessive engine noise in the radio. I have it wired directly to the battery but I'm thinking that perhaps my less than professional soder job on the the wires and connections may be leading to the noise.

Any suggestions?

Thanks!

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Old 02-16-2010, 11:23 AM   #2
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I'm no expret on electrical things, but you may want to check your ground!

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Old 02-16-2010, 07:05 PM   #3
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More than likely you have a ground loop -- check between ant ground to the ground of the cb wire with a volt meter on DC volts... If you have more than .250 volts-- that is 250 millivolts--- both the antenna and the cb are not at the same potential. If you can definitely read read more than 1.5 ohms from antenna ground to the cb ground.. you have an Issue there...
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Old 02-16-2010, 07:37 PM   #4
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Interesting...I'll check that out. Thanks.
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Old 02-16-2010, 08:38 PM   #5
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Thumbs up engine noise

what type of uniden? if you have the anilog switch (should be the 3rd from the left, top row), put it in the up or analog position. this will reduce the noise, or you can go to an auto parts store and get an inline noise filter. putting this between the battery and the radio will filter out the electrical noise. i have a pc78 w/weather channels.
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Old 02-17-2010, 06:59 AM   #6
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It's a 520XL, it has the switch to reduce the noise, which it does very well. I was just hoping to get rid of it all together if I could.
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Old 02-18-2010, 04:25 PM   #7
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You can also try just a magnetic mount cb antenna... See if all the noise goes away with it--this way will help trouble shoot where the actual noise is coming from. If not --you can try some filters on the +12VDC wire feeding the CB... They have the snap on chokes at Radio Shack and also the ones you actually wrap wire around.

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