[Elecraft] MH3 mic with the K3?

Ron Manfredi wa2eio at optonline.net
Sun Jan 1 19:09:56 EST 2017


Thanks, Don.  I was thinking along those lines,  but I wasn't sure about 
the getting bias from the K3.   On the Foster plug I am wiring, should 
pin 6 (bias) be  connected to pin 1 to supply bias?


Ron



On 1/1/2017 6:49 PM, Don Wilhelm wrote:
> Ron,
>
> I am not going to give you a step by step set of instructions, but the 
> K3 (no hyphen) manual has the pinout for the 8 pin Foster jack, and 
> the KX3 manual has the pinout for the MH3 mic plug.
> Match up the AF lines and the shell (AF ground) with the 8 pin 
> connections, and match up the PTT on the MH3 plug ring 1 to the PTT 
> pin on the 8 pin.
> The PTT return is a little more "tricky" and you should connect the 
> MH3 ring 2 to wither pin 7 or pin 8 on the 8 pin Foster plug.
>
> You will need to turn bias on in the K3 menu, and the UP/DN buttons on 
> the MH3 mic will not work - but you should have audio and PTT.
>
> 73,
> Don W3FPR
>
> On 1/1/2017 6:23 PM, Ron Manfredi wrote:
>> HNYto all!
>>
>> Has anyone made an adapter cable to allow the MH-3  mic to be used with
>> the K-3?   I acquired a KX3 with its mic, and a K-3 without a mic, and
>> would like to be able to use the same mic on both rigs.
>



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