• You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.

Cobra 135XLR Output Mods?

ExitThirteen

Grumpy and Cranky
Apr 18, 2008
1,968
1,678
173
Cornpatch of Iowa
Howdy all, I just got a minty Cobra 135XLR radio from a local in our SSB club and would like to know if anyone has any info on how I could get a few extra watts out of it... it currently puts out 2W deadkey swinging 6W on AM, and SSB is about 10W. It doesn't have to have insane power, but a few extra watts would be nice. Anyone have any ideas/suggestions?

It has had a peak/tune done, and channels are installed. I think I'll leave the clarifier alone, since the clarifiers are tough to unlock on this particular radio (unless someone has a clarifier mod that will work). Just a rundown of what's been done so far.

Thanks in advance! (y)

Opps, forgot to mention... it's the TC5080P AM/SSB board.


~Cheers~
 

Alighnment instructions?

At one time Cobra's US offices used to sell us the factory alighnment instructions. I ordered the book for the 2000 back when I bought it new.(No I don't have either anymore. A NY State trooper "borrowed it" and the deed to the house they were in...but I "should be happy" because he "needed to" send his Daughter to college as a payment to me for all of his trouble.)

Does anyone have any factory info more than the schematic for this rig?

I'm having a problem with noise, I know that there should be a be a buffer or a filter, somplace, that is tuned for minimum noise but I probably peaked it instead. My scope is saying that it is so noisy on that classy side of the mixer, that most of my problems are likely due to that. I hate to guess when I already know that the factory figures that stuff out the hard way for us.

Any clues as to which thingy I screwed up instead of down?
 

dxChat
Help Users
  • No one is chatting at the moment.