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Schottky and transistor mod on Cobra 29LXBT

great white

Member
Feb 18, 2011
7
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First, my setup: 1998 GMC K2500 turbo diesel with a cobra 29 LXBT and a 5 foot wilson silverload on the drivers side rear bed corner. SWR is good a t 1.2-ish.

CB is dead quiet around these parts (I'm in a remote location in Newfoundland, Canada) and I usually just end up listening to far distant signals, occasional skip or the ever present channel 6.

I miss a lot of stuff with the squelch turned up, so I'm thinking of doing the Schottky diode and 2999 transistor mod to lower the noise floor, drop the squelch a bit and maybe pick up a few more weak signals.

So, has anyone done it on a newer LXLE or an LXBT?

Just wondering what the board locations are.

It seems slightly different between the various 29 models like LTD, classic, etc.

Not a lot different, but enough to make me want to not blow up a brand new radio....it cost's a lot to just ship stuff here so I'd rather not go through that again if I don't have to!

:)

I have no problem removing and installing stuff on PCB's, I work with aircraft electronics and have had a high reliability soldering course.
 

While receive mods do work given your situation i'm not sure doing it will make you say WOW. If your radio is bone stock then doing the mod and a proper receive alignment might just help.
 
While receive mods do work given your situation i'm not sure doing it will make you say WOW. If your radio is bone stock then doing the mod and a proper receive alignment might just help.

Unmolested as Cobra sent it out the door on day 1....:)

I'd be fine if I could just drop the squelch a bit. I run the RF gain at max and the squelch needs to be about halfway between 1/4 and half (guess that's about 3/8).
 


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