[Elecraft] KX3 and PTT

[Wayne Burdick]

Hi Jim,

Yes, you can use pull the mic's PTT/UP/DN line to ground to activate  
PTT if you split it out from the mic audio line. You could even roll  
your own up and down switches.

73,
Wayne
N6KR

James Robbins wrote:


> As an alternative, and if I am not using the MH3, is there any  
> problem to
> accomplish the same PTT function by building a jumper from a TRRS  
> 3.5mm plug
> (into the MIC jack) to two mono in-line jacks where the pins of the  
> plug are
> split into the two which support the mic (tip and sleeve) and those  
> which
> support the PTT (ring 1 and ring 2)?  I'm planning to use a Heil
> headphone/mic with a foot switch for home use.