[Boatanchors] RF Driver Pot Replacement

[James M. Walker]

Hi Bill,
A shorter way to success and also gaining a few extra parts along the
way
is to get yourself a few old computer power supplies, and strip the
devices out of them. The transistors have a 300 volt rating at lots of
amps. I garnered quite a few when I did that mod for one of my Heathkit
DX-100 transmitters. It is an easy fix and works just fine. No more 25K
4 watt headaches.
Jim
WB2FCN


Bill Pancake wrote:
> 
> Hello All.....  I ran across an article on the web by Norm, WB2SYQ, regarding the use of a "garden variety" HORIZONTAL OUTPUT DRIVER TRANSISTOR with avoltage rating of at least 300 volts, a 1meg, 1/2watt linear taper pot and a 470k, 2watt resistor to replace a faulty (and expensive) RF drive pot in a Valiant transmitter (4watt, 25k ohm). Can anyone advise as to a standard NTE or similar part number for this "garden variety" transistor?  Thanks, Bill, ab0zz at arrl.net.
> 
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