[Boatanchors] ongoing Johnson adventure

[Robert Nickels]

On 2/10/2017 9:33 PM, Bill Cromwell wrote:
>  4 watt pot that (may have) failed after only 57 years or so!

Hi Bill,

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

73, Bob W9RAN