[hpsdr] Wiring/connecting a footswitch to the 200D

[W1FYI]

I have a 200D and like it a lot. I want to run a footswitch and am concerned
about making a mistake but see the pins (PTT input 3v) 13 and either 21 or
25 (analog ground) appear to be the correct to use to key the transmitter
through PTT input for the footswitch. Please confirm that I would be correct
in doing this way. I have the extender board also. Can I just use the TRS
input for the key in the front or is the RS-232 the better way?

 

Thanks and 73,

 

Dick  

W1FYI

 

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