That sounds like a serial port processing problem in the software and would indicate that the software can't keep up with the VFO and when it can't keep up it simply sends a message that the VFO isn't responding. That's just my guess. I could be wrong.
Look at N1MM's manual and see it there is a setting that doesn't pole the VFO continuously. My home brew software doesn't attempt to keep up with the VFO, since usually when I am tuning quickly I'm looking at the rig and the P3's tracking of the VFO. The software gets a reading of the Both of the VFO's states only when the auto update that the K3 VFO sends arrives in the data stream from the K3. Disclaimer: I've never used N1MM and my statement is just one from a retired software developer. It is not intended to disparage the quality of the software. On Mon, 26 Nov 2012 23:09:07 -0500 (EST), [email protected] wrote: >Hi Guys, > >I've been a happy K3 owner for aprx. 3 years. Regardless which CPU I use, >I've always had an occassional problem receiving the error message "VFO A >not responding". When this happens while "running" during a contest it >presents a serious problem as the computer and radio lock up for aprx. 30 >seconds. > >During this 3 year span, I've operated with a dozen different Windows XP >and Windows 7 computers, always using N1MM Logging Software. I've operated >from several different QTH's and have the same problem. I always connect >via a Serial Port regardless of which CPU I use and have not tried a USB to >Serial Adapter. During the past few months, this problem has really >increased, such as: during last weekends CQWW Test, I got the dreaded "VFO A >not >responding" message and computer lock-up at least once every hour. By the >way, I do not have a 2nd receiver in the K3 so I cannot say if I'd have >the same problem with VFO B. > >I'd be grateful for ideas on how to eliminate the "VFO A not responding" >problem. > >Thanks & 73, > >Dick- K9OM >______________________________________________________________ >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 Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member ______________________________________________________________ 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

