[Elecraft] KPA500 AUX input

[Ralph Parker]

I ask this question in advance of the amp actually arriving, so I can't try
it myself to see if it works. Maybe it's an 'Eric' question anyway.

I currently use the AUX output from the K3 to drive my 'Top Ten' type band
decoder (actually, it's a W9XT) to drive the antenna selection relays .
Having an early K3, the pull-up resistors are in the decoder, not the K3.

The question, should anyone venture an educated guess:
Can I drive the KPA500's AUX input in parallel with my existing decoder
using a Y cord, or should I isolate the K3 from both the KPA500 and W9XT
with diodes?

Ralph, VE7XF