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
