[Elecraft] [K2} K2 w/ SDRPlay w/ HDSDR

[Dave Van Wallaghen]

A little OT, but related to the K2. I installed the IF Buffer amp in my 
K2 and feed it to an RSP2 and run HDSDR on the PC. When running HDSDR in 
IF mode, it makes for a very nice panadapter for the K2. I haven't 
messed with this for awhile and installed the latest version of HDSDR 
and was able to come up with the offsets necessary per mode for the 
point and click to be very accurate on the spectrum.

An issue I'm having is that I would like to use the spectrum display in 
a "fixed tune mode" fashion similar to the P3. I.e. I set up the 
waterfall and spectrum windows for a 300KHz width for looking at 40m and 
would like to point and click on the signal of interest without the 
spectrum moving or sliding to the signal position I just selected. As it 
stands now, wherever the current signal selected is displayed in the 
spectrum, as soon as you select another signal, the entire spectrum 
moves to put the newly selected signal in the same location on the 
screen.

I am able to get this function if I take the audio from HDSDR and use it 
with independent tuning from the K2. So, I'm guessing that the reset of 
the spectrum screen is due to linking the tuning with the K2 via OmniRig 
- but I'm not sure.

I could swear I had this ability in the past, but it may never have been 
the case. I reinstalled an older version of HDSDR and it acted exactly 
the same. So, I'm wondering if anyone else has been down this road and 
knows of a trick that I have not found yet for doing fixed mode tuning 
while using HDSDR in IF mode synced to the K2.

Even if this is not possible, this configuration makes for a fine 
panadapter for a K2 with the IF amp sold by DX Engineering. It is Jack 
Smith's, K8ZOA (SK) design and works nicely.

73,
Dave, W8FGU