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Old Oct 14, 2012 | 11:11 AM
  #1  
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From: nj
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Default CB problem

Ok so i got a cobra 75 handheld that i hooked up yesterday connecting to a wilson little wil magnet antenna. Both wire are run directly to the batter. The cb is crystal clear when theres no engine running and when i turn it on all the noise kicks in.. what could the problem be and how do i fix it?
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Old Oct 14, 2012 | 11:22 AM
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From: Lynchburg, VA
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turn on noise blanker(NB switch)
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Old Oct 14, 2012 | 01:34 PM
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Originally Posted by Boost Happy
turn on noise blanker(NB switch)
there is no NB switch
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Old Oct 14, 2012 | 02:42 PM
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From: Lynchburg, VA
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Where are you grounded?
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Old Oct 14, 2012 | 03:54 PM
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Originally Posted by Boost Happy
Where are you grounded?
to the battery.
everyone can hear me find like crystal clear but i can barley hear them
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Old Oct 14, 2012 | 04:03 PM
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Dyna mike and squelch?
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Old Oct 14, 2012 | 04:04 PM
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Id suggest moveing your ground too.
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Old Oct 14, 2012 | 05:02 PM
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Originally Posted by UsmclovesXJ
Id suggest moveing your ground too.
no... read up on acceptable radio practices, the cleanest spot is the battery

I am an FCC licensed Amateur Radio Operator, holding a general glass License, second highest you can get right now.

so lets talk about real solutions...

go to radio shack and purchase a ferrite core, then coil your power and ground leads through them,

if this does not work try messing with the way you routed the power and ground wire, BUT keep them attached to the battery

you might also try running a dedicated ground to the alternator

you might try relocating the antenna, but that most likley will do nothing

you could look into a noise filter, might work, might not

a large capacitor on the alternator might help

Last edited by ericfx1984; Oct 14, 2012 at 05:09 PM.
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Old Oct 14, 2012 | 06:24 PM
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Originally Posted by ericfx1984
no... read up on acceptable radio practices, the cleanest spot is the battery

I am an FCC licensed Amateur Radio Operator, holding a general glass License, second highest you can get right now.

so lets talk about real solutions...

go to radio shack and purchase a ferrite core, then coil your power and ground leads through them,

if this does not work try messing with the way you routed the power and ground wire, BUT keep them attached to the battery

you might also try running a dedicated ground to the alternator

you might try relocating the antenna, but that most likley will do nothing

you could look into a noise filter, might work, might not

a large capacitor on the alternator might help
ok thank you ill shall give this a go tomorrow
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Old Oct 14, 2012 | 06:30 PM
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Originally Posted by xj5
ok thank you ill shall give this a go tomorrow
no problem brother, I hope it works for you

I might also mention that the lil' wil is a short antenna, with a mag mount and coil in the base, it does not ground and as such can be more prone to noises, try running a small ground wire from the nut on the bottom of your lil wil, that might clear it up
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Old Oct 14, 2012 | 06:35 PM
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Originally Posted by ericfx1984

no problem brother, I hope it works for you

I might also mention that the lil' wil is a short antenna, with a mag mount and coil in the base, it does not ground and as such can be more prone to noises, try running a small ground wire from the nut on the bottom of your lil wil, that might clear it up
Ive had to do this on my 102 whip mag mount. On the roof.
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Old Oct 14, 2012 | 06:40 PM
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Originally Posted by UsmclovesXJ
Ive had to do this on my 102 whip mag mount. On the roof.
nice, I run a 102 on the front fender, works great from 26.965 - 29.700
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Old Oct 14, 2012 | 06:43 PM
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ok so it also seems that when i unplug the coax cable from the cb not all but a good amount of the noise disappears. i dont know if this changes anything
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Old Oct 14, 2012 | 06:47 PM
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Originally Posted by ericfx1984
no problem brother, I hope it works for you

I might also mention that the lil' wil is a short antenna, with a mag mount and coil in the base, it does not ground and as such can be more prone to noises, try running a small ground wire from the nut on the bottom of your lil wil, that might clear it up
do i have to pull the magnet off? where is there a nut? its just a flat surface
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Old Oct 14, 2012 | 06:50 PM
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Originally Posted by xj5
do i have to pull the magnet off? where is there a nut? its just a flat surface
take a pic of the bottom
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