[Elecraft] Set up of Heil ProSet K2 Headset assembly

[Don Wilhelm]

Ray,

It sounds like you did everything right.  Sorry to hear of your 
disappointments.
Do you have a computer soundcard that you know works with a computer 
microphone?
If so, plug the Proset K2/3 mic into that soundcard - it should work.
To check the adapter, plug a computer mic into the Proset adapter - it 
should produce audio in the K2.

Just to double-check your installation - all pins on the microphone 
configuration header should have a jumper straight across, and the 5.6k 
resistor should connect between mic jack pins 1 and 6.
With the microphone not connected, check for the presence of 5 volts at 
pin 1 of the mic jack.  Also check for zero ohms to ground at pins 7 and 8.

73,
Don W3FPR

On 11/5/2011 7:33 AM, Ray Spreadbury wrote:
> I then re-fitted the boards and reset SSBA = 1, SSBC =2, POWER = 5 watts&
> tested the rig with both PTT&  VOX. I found:-
> Receiving, everything working OK with either the LS or the ProSet headphones
> CW everything working OK
> PTT switch appears to work OK, VOX apparently not working&  got no audio
> output from the microphone with either VOX or the PTT. I.e. there was no
> movement of the K2's power display.
>
> Having re-checked the wiring on the mic. socket&  the 5.6k resistor, I
> suspect the Heil condenser mic is not working - how can I check it or are
> there other things I should look at?
>