Has anyone out there built a solid state replacement for
the audio output tube in the R-392? If not it would
seem that a power MOSFET, and associated circuitry,
in a tube socket base would be useful.

I'm in the process of building a power supply for
my R-392, and the output tube draws a lot of current.
It'd be nice to do without it.

Steve

"Steve" ) writes:
Has anyone out there built a solid state replacement for
the audio output tube in the R-392? If not it would
seem that a power MOSFET, and associated circuitry,
in a tube socket base would be useful.

I'm in the process of building a power supply for
my R-392, and the output tube draws a lot of current.
It'd be nice to do without it.

Steve



I seem to recall an article in "73" about building a solid state
AF module for the R-392. Late seventies or early eighties, by
Gary McClellan (I likely don't have that spelled right, but the
guy wasn't a ham, but did write a fair number of articles at
the time, mostly about test equipment).

Michael VE2BVW

Steve wrote:
Has anyone out there built a solid state replacement for
the audio output tube in the R-392? If not it would
seem that a power MOSFET, and associated circuitry,
in a tube socket base would be useful.

I'm in the process of building a power supply for
my R-392, and the output tube draws a lot of current.
It'd be nice to do without it.

Steve,

There are some details of the different solid state audio
mods at:

http://www.roveroresearch.com/r392/hints.html

towards the bottom under Solid State Audio

Thanks Josh. I found this site earlier today. Lots of
good info and tips there.

Steve
"Josh Rovero" wrote in message
...
Steve wrote:
Has anyone out there built a solid state replacement for
the audio output tube in the R-392? If not it would
seem that a power MOSFET, and associated circuitry,
in a tube socket base would be useful.

I'm in the process of building a power supply for
my R-392, and the output tube draws a lot of current.
It'd be nice to do without it.

Steve,

There are some details of the different solid state audio
mods at:

http://www.roveroresearch.com/r392/hints.html

towards the bottom under Solid State Audio