[Elecraft] Adapting Icom SM-20 Electret Mic for K3

[Phil Hystad]

I like my Icom SM-20 Electret Mic and from what I have learned so far there should be no reason why I cannot adapt this for use with my future (ordering next month) K3.

I don't plan to physically modify the SM-20 but rather create an adapter that accepts the 8-pin plug from the SM-20 and then that would be wired to an 8-pin plug to plug into the K3.  I know I would have to wire this adapter to deal with the fact that the pins are not used in the same way for the Icom versus the Kenwood style wiring.

And, I assume that the bias voltage that the mic needs can be supplied by the K3.  I have no idea what this is but I presume it is somewhere in the range of 5 to 12 volts.

If this plan has flaws please let me know.  Also, I am not sure if the mic impedance would match up with the K3 so if anyone has a comment there I would appreciate it.

Thanks,
phil, K7PEH