[Elecraft] K2X HRD PTT interface

[Don Wilhelm]

Jim,


I assume you have the KX2 (not the K2X).

For proper operation, you must have an indication on the ALC meter.  4 
bars solid with the 5th bar flashing.
If you do not achieve that condition, the power output will be erratic.
Note well, that is the "NO ALC" point for the KX2, KX3, K3 and K3S.  ALC 
starts at the 5th bar - the other 4 bars are there to allow you to 
adjust the audio gain.

The usual problem is not enough audio gain - If you have the KX2 Mic 
Gain at a very high setting, that may be too much - I know the KX3 
reduces the audio if there is too much, and I assume the KX2 does also.
Start with the MIC gain low and in the computer (and HRD), set the 
soundcard speaker (or line) to about 50%.
Then turn up the MIC Gain until you have the proper number of ALC bars.

Set the desired power on the KX2 and operate.
Ignore the common internet advice to adjust the power with the audio 
level, it does not work well with Elecraft gear.

73,
Don W3FPR


On 5/2/2017 4:27 PM, Jim Sr Sturges wrote:
> Don,
>
> Thanks. Gave up and used Vox. Can't see any ALC limiting, but can hear 
> outgoing signal on another radio. Still tweaking and haven't had first 
> QSO yet, but hope springs always!
>