[Elecraft] SDR-IQ and K2

[Steve Bunting]

Hi Folks,

I have a Z10000 buffer board in my K2 and have used it to drive a 
softrock as a panadapter for some time. It works just fine, but I have 
left this uncalibrated and my PC doesn't really have enough horsepower 
to run my external soundcard.

I have been trying to reduce PC overhead and introduce "click to tune" 
by using an SDR-IQ instead. The system displays OK, but I cannot get 
Simon's SDR-Radio software to calibrate the panadapter to zero beat the 
radio RX. I know about the cal functions, but can't dial in enough 
offset for all modes. I suspect I am doing something fundamentally 
incorrect - can anyone help?

1) I am using telling the SDR that the IF is 4.915MHz. I assume that is 
correct? I see that the soft rock radios are at 4.898MHz and I am not 
sure why.

2) I assume the K2 offsets the frequency when modes are changed? If so, 
by how much on each mode? Does any mode have no offset at all? This 
would be the one I need to perform my initial calibration with.

If any one has a K2 working with an SDR-IQ (either with SDR-radio or any 
other software that provides click to tune) I'd really like to hear from 
you - i have plenty to learn!

Thanks es 73
Steve
M0BPQ