Erik, Do you see the BFO frequency flashed on the display when you exit? If so, you are verifying that the value is being saved.
Fact, the DAC resolution in the K2 is about 20 Hz. If the difference is less than 20 Hz, it my be a situation you have to live with - you have reached the limit. Are you using SSB or the RTTY filter set? If so, there should be no difference in the VFO between RX and TX. If you are listening with a filter other than FL1, then yes the BFO will be switched to FL1 for TX. If your goal is no difference between TX and RX, then you will have to RX with FL1 If you use an RX filter different than FL1, you will have to unlock TX and RX in your software to keep from "walking the band". Most packages allow that - I don't know about the NUE-PSK, but II would think that is a required condition. 73, Don W3FPR On 4/29/2012 3:28 PM, Erik Linder wrote: > Hi all, > > I decided to recalibrate the filters in my K2 because I noticed a small > RX-TX frequency difference which made it hard to use my NUE-PSK. > > But I didn't get the calibration working... > > I enter filter calibration menu. I select FL1 in open-mode. I adjust (in > RX) the BFO and watch the audio move on the waterfall (change pitch). All > seems 100% OK. > Then I press XFIL to save the value. (the freq-probe is in TP2 - duoble > checked). > When I then return to FL1 the pitch is back where it was from the start. > > I first thaught that the value did not get saved, but after re-checking the > BFO-D/A value it has been saved. > I then tried to measure U8 pin 16 to see if the control voltage is changing > - yes it is. > The voltage changes when I change the BFO-D/A value in cal filter. The > value I choose will be saved and I can measure the same voltage when I > return to FL1. > > But the BFO keeps resetting itself no matter what value I choose in cal > filter. The most strange thing is that the BFO changes as long as I am in > cal filter menu, it resets itself when I change filter (saving the value) > > I had the SSB option in, but in the troubleshooting I removed it. The > behavior is still the same with or without the SSB option plugged in. > > So... Can anyone give me a clue what's going on here? > > Tnx in advance and 73 de SM0RVV > ./Erik > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
