[Elecraft] [K2] poor IMD on barefoot K2, even at low power

[Don Wilhelm]

Oleg,

With the K2, you should have zero ALC bars illuminated - reduce your 
audio input level until the ALC bar does not illuminate.
Are you using SSB mode?  If so, have you set the menu SSBC parameter to1:1?
You can set up the RTTY filter set (turn RTTY=ON in the secondary menu), 
and you will have a dedicated mode for soundcard data modes.  The 
advantage is that the compression setting is independent of that used 
for SSB.

73,
Don W3FPR

dl0tuh wrote:
> Hi,
>
> I gave a test to my PSK31 setup today - barefoot K2 #5932 with M-Audio sound
> card in my desktop pc. My laptop pc was connected to a FT-840 and listening.
> Both used old good DigiPan.
>
> I let my laptop measure IMD and also asked for this value during QSOs. In
> all cases it's about -16dB which is very poor I beleive.
>
> The power level is set to 5W. PC sound output level was decreased so that
> only the first ALC bar blinks.
>
> I also tried power levels setpoint from 0.1W to 15W. IMD value changed
> continuosly from -19dB to -12dB.
>
> Anything I could try/check to figure out the reason of destortion?
>
> vy 73 de DL2IPU Oleg
>   
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