Hi,
For the 4-pin mic pinout for the MH-3 microphone, it is listed that the
PTT line also carries logic for UP and DOWN keys.
As I want to interface using a Heil Traveller headset, which has the UP
and DOWN key signals on a seperate line (8-pin round standard), how are
the logics defined for this pin (first ring on the 4-pin jack) on the
Kx3 and MH-3, respectively ?
Would it be possible to ask for a schematic ?
73'
Brian OZ2BRN
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