I had to try it. Both VFO's set at 6.000.000 and LINKED. Turned VFO A slightly lower to 5.999.999. VFO B followed exactly. Could also turn VFO higher in frequency and VFO B still tracked okay. If I went down farther and tuned very slowly both VFO's tracked. If I went below 6.000.00 and tuned quickly VFO A would jump to 5.371.500 (or whatever freq is setup on the 60M position). VFO would continue to follow VFO A as if VFO A did not jump in frequency. If I then quickly turned VFO A up, it would jump to 6.000.000 and both VFO's would track again. After doing this several times the VFO's would not track exactly. That was weird. Went back to the Ham bands and everything is fine again. That is enough of that for me. Back to the Ham bands. 73, N2TK, Tony
_____ From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of James Sarte Sent: Sunday, February 22, 2009 4:40 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Strange behavior when tuning around with SUB receiver LINKED Dear group, Someone please explain to me what's happening with my K3. I have both main receiver and sub receiver linked. This way, I can tune the sub receiver with the main VFO knob. However, there's something weird going on when I cross some sort of band edge. For example, if both VFO A and VFO B are set to 6.020.00 and I tune down the band using the main VFO knob, as soon as VFO B reaches 5.997.00 the readout in VFO A will jump almost 900KHz down to 5.030.1. When tuning back up the band, when VFO B reaches 6.017.0, the reading in VFO A will jump almost 900KHz again to 6.959.0 Sometimes the difference can be 500KHz or 900KHz. When this happens, I also hear a clicking noise in the K3, and I'm assuming it's a relay switching. I've seen this behavior while tuning up and down, which leads me to think that the K3 is hitting band edges and adjusting, but the strange thing is, the frequency between VFO A and VFO B do not stay the same. Also, and possibly another more concerning issue is that when the sub receiver is on, and I'm tuning anywhere from 4.9 to 5.9MHz, there is a loud motorboat or zipper noise that is heard through the speaker, and is affected by spinning either VFO A or VFO B knob. The noise stops if you don't turn any VFO. Turn any VFO knob though, and the motorboat zipper noise resumes. If you turn off the sub receiver and spin any VFO knob, this "zipper-like" or motorboat noise almost goes away. It is still there, but now very faint and can barely be heard over the static. 73, James KC2UEE
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