i guess I'll end up breaking down and do a real SA measurement over the weekend to double check my ears :-)
Grant/NQ5T On Feb 13, 2009, at 9:09 AM, Don Wilhelm wrote: > Grant, > > The answer depends on how much you can trust your ears to discern > pitch - mine are terrible at that task, so I use the spectral > analysis software as my 'crutch', but if you have good pitch > recognition, your settings may be as good as it gets. > > 73, > Don W3FPR > > Grant Youngman wrote: >> I have all 8-pole filters in my K3. I've always noticed a slight >> audio response difference between LSB and USB positions. Read >> some list history on the topic. I do have a wideband noise >> generator and spectral analysis software, but have been too lazy >> to get everything set up. So I did a quick and dirty, just >> equalizing the receive response aurally on all of the installed >> filters. >> >> Ended up with -0.12 on the 2.8, +0.06 on the 1.8 and -0.05 on the >> 400. >> >> I'm curious wether the experts around here think that's close >> enough for government work, or if it's really worth going the >> spectrum analyzer route. Could these results just be due to >> unequal skirts, and maybe I should just "don't worry, be happy" >> and leave the 8-pole offsets set to zero? >> >> Thanks ... Grant/NQ5T >> ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
