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President Lincoln II + very low volume on CB-AM after Mod

badspell68

Member
Joined
Mar 12, 2014
Messages
27
Location
New Hope - PA
I recently picked up a President Lincoln II + and did the CB mod. Now have CB FM and AM. But, on the CB AM band the volume is very low. Any one else experience this and have insight or a fix?
 

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badspell68

Member
Joined
Mar 12, 2014
Messages
27
Location
New Hope - PA
Uh, maybe I did not, Duh. Just turned up the gain and...Yes, it's much louder. Thanks! But, the other bands are so much louder at this setting then the CB AM. Any guess on what happened? Is it the mod or CB in relation to the other bands? (If you haven't guessed, I'm newbie)

Here is a pic of my cobbled together setup (20' CB antenna on Roof and installing this week 10' GMRS/2M in a 30' tree) and currently studying for HAM license, but still like GMRS and CB :)
 

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prcguy

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Jun 30, 2006
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10,028
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So Cal - Richardson, TX - Tewksbury, MA
The S meter is the little scale at the left of the display that shows how strong someone is being received by how many bars like 1, 3, 5, 7, 9, etc. On transmit it should show bars going to the right. When you receive someone are they lighting up any bars or is it blank like your first picture? Unsquelched background noise would be when you turn the squelch knob fully counterclockwise and the radio makes a hissing static noise. Is the volume of that noise in AM mode at the same level as AM mode on other bands?

Without seeing the radio and knowing exactly what you did during the modification its hard to say what's going on. These radios are designed as CBs and doing a mod to enable the regular CB band is just adding that frequency range and should not affect any other aspect of the radio.

Don't even know what an "S" meter is yet. Unquenched background noise?
 
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RFI-EMI-GUY

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Dec 22, 2013
Messages
4,055
also the band could be quite dead at the moment. You will always get a lot of speaker noise in FM because that mode has a lot of signal fro random noise when there is no desired signal.
 

ladn

Explorer of the Frequency Spectrum
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Oct 25, 2008
Messages
586
Location
Southern California and sometimes Owens Valley
Did that. Still significantly (really really low!) lower volume then all other bands.
Are you listening to the other bands in the same mode? Try each band in AM, then FM. You will be listening for consistency between bands with the squelch wide open. I'd expect FM to be louder, all things considered.
 
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