started this list in 2000,

I found it in the archive and continued, meanwhile, I got his ok !

Extremely interesting Stoner Site on CB Gazette !

This is a Stoner PRO - 40 SSB CB Radio, this unit is very rare! This PRO-40(#491) was made on May 17th 1978,and my other Stoner PRO-40 # 263 was built on jan 13th 1978.

A: The BEST SSB CB radio ever made

A number of unusual engineering techniques were employed in the PRO-40.

To eliminate crossmodulation interference from adjacent channels, Stoner avoided the conventional transistor r.f. amplifier/mixer technique used in virtually ALL CB receivers even today.

In fact, no r.f. stage is used at all and a Schottky diode mixer is employed, similar to that used in commercial SSB equipment. With no amplifying stages in the front end which could be overdriven by strong signals, the receiver uses dual cascaded crystal filters for extraordinary selectivity. Reception of unwanted sideband is totally suppressed. This allows the radio to be used within 100ft. of another station without harmful interference. Adjacent channel rejection is greater than 90dB, and crossmodulation rejection greater than 120dB.

AM heterodyne can be eliminated by the "Whistlestop" passband audio filter, which can also be used to "peak" audio, helping separate stations on the same channel. In addition, dual time constant "NB1" and "NB2" noise blankers are provided.
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separate stations on the same channel. In addition, dual time constant "NB1" and "NB2" noise blankers are provided.

Please send me an email, if you want to be posted on the list !

Also pictures and stories about your stoner(s) are welcome !

tom@sofafunker.de

The missing analog circuit part 1 and part 2 , the LEDs and powersupply.

Stoner Problmens and solutions:

Problem: The f***ing popping noise ( about half a second, same rhythm as flashing of LEDs, when closing the squelch or transmitting without audio.
Solution ( at least with my #361 ):
I found out, that it is the 2 Volts power supply of the number and dot LEDs. They are generated by a thick 10 Ohms resisitor (R601) from the 5 Volts on the counter board.
After this resistor there was a big fat spike ( about 2 Volts ) every time, when the LEDs flashed. Before the resistor the supply voltage was clean. So I overbridged the R601 and set another 2 watts resistor just on the edge between LED borad and counter board. So the spike couldn't influence the other electronics any more, no more popping noise... (-;

Problem: Crappy power supply, very hot diode rectifier.
Solution from Mike 390 , just ad a second transformer for the 5 volts supply with an extra rectfier. I built it in the free space below the main transformer, it works well ! The main rectifier is much cooler now, more power for the 15 and 9 volts.

Solution

from the CB Gazette site