Re: [Elecraft] K2 noise on receiver when switching from transmit

2015-06-11 Thread Mike Fanning
Don, your question is valid but I’m afraid I don’t have a good answer. I honestly don’t know if this is a recent occurrence or if it has always been there because I have practically no run time on the KPA100 since I built it. I have put the KDSP2 in bypass and that does fix the problem, as lon

Re: [Elecraft] K2 noise on receiver when switching from transmit

2015-06-10 Thread Don Wilhelm
Mike, With the blue toroids, you do have the updated KPA100. Can I assume that this problem is a recent occurrence rather than a problem that has always been there? Yes, removing and jumpering out the KDSP2 will likely stop it (or just try putting it in bypass), but that is not the source o

Re: [Elecraft] K2 noise on receiver when switching from transmit

2015-06-09 Thread Mike Fanning
Thanks for the quick reply Don! I checked the 8R setting and it was indeed set to hold (and is set there again after toggling it to make sure). I do have the KDSP2 option with the KPA100, but after peeling off the right side panel I see two baby blue toroids. The K2 is serial number is 5882 a

Re: [Elecraft] K2 noise on receiver when switching from transmit

2015-06-09 Thread Don Wilhelm
Mike, I am curious to hear just how long ago that "some time ago" really is. The first thing to check is the setting of 8R - it should be set to HOLD with the KPA100 installed. To check, go in the menu to T-R, edit the parameter and then tap DISPLAY. If 8R was already set to HOLD, you will

[Elecraft] K2 noise on receiver when switching from transmit

2015-06-09 Thread Mike Fanning
Hi all, I have a K2 that I built some time ago that I added the KPA100 to at a later time. I don’t have more than 10 minutes worth of run time on the KPA100 and I’m putting a dress rehearsal together for Field Day in a couple of weeks. I noticed tonight that when I am running more than about 1