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Author Topic: Any CB Experts...  (Read 813 times)

Offline biggfish

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Re: Any CB Experts...
« Reply #25 on: September 26, 2017, 04:20:50 PM »
Your antenna needs to be grounded as well. You said you fabbed up and aluminum bracket, I have a steel bracket that mounts in the hood channel so wouldn't need a separate ground. If you get a signal with a non grounded antenna your transmission abilities is usually limited to line of sight.

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Offline SniperDanWA

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Re: Any CB Experts...
« Reply #26 on: September 26, 2017, 05:42:25 PM »
If you are still getting static when keying up, put a EMI lead between the battery and the power.  You know, the kind on computer monitors, etc.  it just takes some of the noise out.

Russ is right on tuning in the frequency.

I am a HAM operator, not much to do nowadays with CB.  Most big rigs for over the road have moved to multi-band Ham radios that also cover CB.  I talk to drivers occasionally pulling through Federal Way, SeaTac, Des Moines, Burien, Auburn, etc.  I do think the loggers are still on CB as that is a different use case.

I've installed a lot of CBs over the years.  Keep the wires away from the alternator.  That's the primary noise source.  Punch through the firewall away from your AM/FM Radio too.  Find a grommet.  Don't run the antenna coax near the alternator either.  In addition, make sure the coax is soldered well.  Keep the antenna away from the cab.  Anything that can bounce the signal will deflect it some and lessen your distance and clarity.
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Offline timberghost72

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Re: Any CB Experts...
« Reply #27 on: September 26, 2017, 07:38:02 PM »
Your antenna needs to be grounded as well. You said you fabbed up and aluminum bracket, I have a steel bracket that mounts in the hood channel so wouldn't need a separate ground. If you get a signal with a non grounded antenna your transmission abilities is usually limited to line of sight.

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Aluminum works as well if not better than steel due to it's resistance to corrosion. Aluminum is an excellent conductor of electricity.

Offline Russ McDonald

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Re: Any CB Experts...
« Reply #28 on: September 26, 2017, 07:58:17 PM »
The NMO style mount and coax will be grounded via the aluminum mount that you made.  So grounding is not a problem.  What kind of truck do you have?  I have over the past many year seen Chevy have a really bad alternator whine with any type radio I have installed in them.  Even with a noise filter put on the power line.
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Offline Shrimper

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Re: Any CB Experts...
« Reply #29 on: September 27, 2017, 12:26:42 PM »
The NMO style mount and coax will be grounded via the aluminum mount that you made.  So grounding is not a problem.  What kind of truck do you have?  I have over the past many year seen Chevy have a really bad alternator whine with any type radio I have installed in them.  Even with a noise filter put on the power line.

Haha truck, one would assume so with a hunting rig.  No this is on a Nissan Stanza wagon, have had this car forever and it has been out of commision for years but with a jump it fired right up and still runs great.  With its really short wheel base and 4x4 it will make a great grouse hunting rig.  This is a really neat car, ugly as heck but very capable.

Took a fews pics of the set up so you can see what it is, pretty simple but it should work great for what I need which is mainly letting the log trucks know where I am or knowing where they are at for saftey.

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Offline Russ McDonald

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Re: Any CB Experts...
« Reply #30 on: September 27, 2017, 01:50:01 PM »
Today bracket is perfect.   That is what I used when installing cb's on rigs.  That is a old CB.  Haven't seen one like that.   Must have been one of the first versions of the small cb's.  Alternator whine is a tough one.   Make sure you ground is a chassis ground that is factory.  Make sure your battery connection is clean.  You can get alternator whine if the brushes on your alternator are wearing out.

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Russell McDonald
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