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I worked at a Calibration Lab and had to cal those. There were 2 pots that were like a balancing act to get the circuit calibrated. One counteracted the other. Always a fun cal to do

That link made it too easy to mod. I had to chase the foil runs down on the 880 and newer surface mount Uniden radios.

All of Asymods boards are off MMM's old board. Jose stuffs a cheap Chinese buck converter on top of the board to run off of single radio supply. Jose's knock off works but I've seen his converter board fail often. I've had both MMM's boards and an Asymod. Jose adds a few more parts to dress up...

Check the bias transistor bro

HG’s are available from a few Shops and also direct. I’ve replaced a few radios finals and all are equivalent if not better. http://www.hgsemi.com/case.asp?id=9

Teaberry, Simpson Pearson and a few others are overseas aversions of Uniden/President. Simpson.

PC-385 ? http://www.cbtricks.com/radios/uniden/washington_mb8719/graphics/uniden_washington_mb8719_sch.pdf

I just bought some new 455,1969 ,2312 and 2879 all made by HG. All are same as original and sold by a few different sources now. Just an FYI. I'm gonna build the same Lincoln board for my bad final 2510's I have laying around

With the Mosfets, the parts I fuss with is getting the gate voltage right. Normally I make a divider off an 8 volt TX source for 3.8 volts and the rest is just fine tuning the surrounding impedances, which normally is a few hundred picofarads here or there. In the 29's I've done, I never add any...

Take what you need , I've used bits and pieces for my Madison projects, tried to piece together a few schematics on one to try make it easier for myself. Hope this helps. Also the Simpson Bengal MKIII uses the same board

If its a 2 piece , he could just ship the RF deck.

Heart of the SP1a is the NE571 compander.

Repositioning interface for inertia navigation system. A/D converter had some hung bits. Turned out to be the clock input was bad.

Just sent my Chipswitched Lincoln to Roger. He had a few in front of mine

I don't know if the CD version schematics are similar to the DX and oldschool orange display version. I do know that the issue was most likely on the CPU PCB, the tech probably wrote up the wrong PN's

Wrong schematic bro, C14 and R13 on that schematic affects the receive. CPU PCB doesn't reflect the same part numbers.

Was watching one of those silly super duper cobra videos. The solder slinger was mentioning that the light rings were going for $17 on ebay. Educate yourself consumers, $5 from Eric over at Palomar aka EKL Imports. Just doing my weekly good deed and staying away from these recent Return from the...

Talk about resurrecting from the dead.

Technology hasn’t changed much in the basic circuits of the radio. That radio has tons of mods for it. Most shops should be able to help you

The new president/Uniden radios pale in comparison to the 2510. I have a new to me Lincoln II and it is now where near a 2510 or Lincoln I own.