Hi Leif! >I would not think so. You might reverse I and Q. If the phase slider >wants to stay the same, the problem is the soundcard (or rather the >device driver I would guess) but if you have to shift the phase >slider to the opposite position, then the error would be in the radio >hardware.
Ok, guess what! I changed the channels behind the SDR and I still have to put the delay tag on on the right channel, so the problem stays still. The image rejection changes a little bit. The frequency itself and image of course swapped their places. Here's pictures: I swapped the channels and took this. http://www.saunalahti.fi/johku76/pic/swapped.jpg Then I swapped them back and took this. I had to touch a little to the amplitude and phase sliders to get a goot rejection, but just a little and the main thing, the delay tag stayed in the right channel and made it worse if I put it on the left channel and tried to find attenuation. http://www.saunalahti.fi/johku76/pic/original.jpg >Without calibration you will see the performance of the bare >hardware(analog + digital) After calibration you should have 70 dB or >better on all frequencies. Maybe thermal drift will degrade rapidly, >but if you stabilize temperature and voltages you should be able to >have 70 dB or better permanently. > I kinda did the calibration some time ago... Maybe I can move the calibration file and then continue? BTW I also have linux on my computer (double boot: Ubuntu physically on a other HD), but E-MU doesn't provide any information for linux ppl so they could make drivers :( So, I can't use it on linux. I checked linrad SSB section and the image attenuation seems to be pretty good at the first sight. 73 de Janne Pulkkinen, OH1GTF
