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As far as l know, there are no schematics available. Tube set up is the same as the D&A Maverick..
What do you need to know? I have repaired many of them and have experience plus many notes on them.
I have some of one l did about a year ago..I'll dig them up and post them later..There are several different configurations, so if it's not the same, I should have other pictures too.
You have to be careful which external "power supply" you get since there are two different models of 300A's. The difference is in the power supply in the amp itself. One uses a full wave rectifier and the other model uses a doubler for the high voltage. If you get the incorrect external power...
The 6JG6 is not used when it was converted over to an amplifier. It was the oscillator tube when it originally was a transmitter. It still has to be in the socket so one of the 6LQ6's will light up since the filaments are in a series-parallel arrangement. Being basically a 9 tube Phantom the...
I would replace the small electrolytic caps in the keying circuit, plus the 250 uF's in the 12 VDC power supply. I would replace the 250's with 470's like the later models used.
Fixer
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