[Elecraft] [KX3] IF Shift Status

[Dave Van Wallaghen]

I've been playing around with Quisk on my Linux Mint 16 laptop and it 
seems to work pretty well as a panadapter for my KX3 using the I/Q 
outputs. I paired it up with a EMU 0202 I had laying around from my 
LP-Pan install and with some tweaking of the config settings, I am able 
to see 192kHz spectrum.

One of the problems I see with this setup is that Quisk does not track 
the IF shifting that occurs under certain conditions i.e. AM mode shifts 
11Khz, LSB or USB when switching in the Weaver demod raises or lowers 
the IF 1.5kHz and then the RX Shift of 8kHz. Maybe there are more? Quisk 
will stay on and report the VFO freq but the whole display is shifted 
with the IF and you really aren't looking at the right spot anymore. Not 
to mention that if I'm monitoring the audio through my laptop that it is 
now tuned off the reported VFO and now looking at the shift.

I thought about playing around with the Quisk code and in particular the 
config code for the rig interface to monitor the IF shift of the rig in 
hopes of compensating for the offset. Quisk uses hamlib as the interface 
to the rig and I can use the rigctl app in Linux to query the KX3 to 
test commands.

My question is to those who might know, is there a command to figure out 
what the IF shift is set at any given moment? I looked through the 
programmer's reference but could not find what I need. I thought the IS 
command might work but I think it reports the shift in the audio passband.

I think I read recently that HDSDR compensates for the AM shift so I 
think it is doable. Or maybe they just monitor the mode and manually 
shift the scope based on the mode. HDSDR looks very nice, but I'm trying 
to stick with Linux for the time being for various reasons. Any insight 
would be appreciated.

73,
Dave W8FGU