[Elecraft] MH4 Microphone Questions

[Don Wilhelm]

Bill,

I would suggest that it would be much easier to create an adapter for 
the MH3 to an 8 pin Foster plug - an 8 pin Foster jack to a 3.5mm plug 
would be quite cumbersome and clumsy in comparison to the size and 
portability of the KX2/KX3.  The PTT connection would be easy (PTT goes 
to ground), but if you also wanted the UP and DN buttons to work, you 
would have to add some level sensing circuitry whose outputs would be 
connected to the UP and down input pins on the Foster connector.

Look at the schematic of the KX2/KX3 mic connections and compare the 
output to the pinout of the K3(S) mic connector and you will see the 
difficulty.

So I think the adapter that you have suggested would not be practical 
for the KX2/KX3.

73,
Don W3FPR

On 9/3/2017 6:34 PM, Bill Johnson wrote:
> Wayne, will you offer a mic adapter to also use with KX@ and KX3?