[Boatanchors] ongoing Johnson adventure

Rob Atkinson ranchorobbo at gmail.com
Sat Feb 11 08:22:06 EST 2017


Bob,  What are these tv or power transistors I often hear about?  Are they
still in production?  Do you have any model numbers that can be
searched?  What transistor terms am I searching for?

Tnx 73

Rob
K5UJ


>
> The drive pots are a common failure item on many transmitters, including
> the Johnson Ranger and Valiant and the DX-100.  A simple fix is to
> substitute a regular pot and a power transistor, as described here,
> among other places:
>
> http://www.amwindow.org/tech/htm/drivepot.htm
>


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