[Elecraft] KPA500

[Andy Durbin]

The keyed with no drive current of my KPA500 is 0.2-0.3A.

I participated in a voyage of discovery with the T/R switch.  Ian, G4GIR, provided the test article and did all the work, I just made a few suggestions.

The result of that journey was a mapping of the voltages at almost all component junctions of the T/R switch.  It should be a useful resource for anyone suspecting T/R switch problems.

https://www.qsl.net/wb4kdi/Elecraft/KPA500/Good_D10.png

Andy, k3wyc