On this subject. I did notice a "chirping" signal during the NAQP last Sat. No idea of call, should have made a note I guess. Second time in a week I heard this on the air.
Sent from my iPhone ...nr4c. bill > On Jan 19, 2017, at 2:09 PM, Doug Smith <d...@w7kf.com> wrote: > > Yup, that was me. > > There were some good suggestions made here and I’ve checked them all and I’m > unable to get the K3S to chirp. So, at present: unable to replicate.. > > Some of the suggested things I’ve checked: > > 1) SWR at the K3S while driving the ACOM 1500 (same operating conditions) is > 1.05 to 1. SWR between the ACOM and the antenna at the noted frequency is > 1.2 to 1. > > 2) Voltage at the K3S is 13.8 key up and 13.2 key down; seems OK. Power > supply is a switcher which I’ve used for some years. > > 3) K3S is drawing 21.96 amps key down. (Not running 100 watts into the amp.) > > 4) I’ve intentionally “mis-tuned” the amp just in case that is what was going > on when the OO noticed the chirp. I did this by tuning up properly at 14.001 > and then QSYing to 14.083 and transmitting while monitoring with a different > receiver. No chirp, clicks or other anomalies. This is a much worse > operating condition than I normally encounter. It’s so easy to tune the ACOM > that I keep it properly tweaked. Also, I was operating in CW SS and in the > middle of a 2 hour run when the OO heard me chirping and I have a tough time > imagining that I’d sit on a given frequency for two hours without making sure > I was properly tuned. > > 5) I do not use ALC between the K3S and the ACOM. I do run with specific > power levels on each band (great feature, BTW) such that I’m not able to > overdrive the amp. > > 6) I’ve checked my in-the-shack coax jumper cables and I don’t see any > issues. The antenna end of the coax is currently under 2 feet of snow so I > haven’t looked at it. But, I’m getting normal SWR readings here in the > shack. There isn’t any arcing going on or the amp would shut down. No RF in > the shack; no TVI or other issues in the house. > > 7) I recently made 535 QSO’s in NAQP CW and did quite a bit of listening on a > second receiver, never heard a chirp. I wasn’t using the ACOM so I ran the > K3S at 100 watts. And, finally, I have not yet received another OO report > after the NAQP. ;-) > > I dunno what to think. The issue remains unresolved but I am unable to > replicate the problem. > > 73, > Doug, W7KF > http://www.w7kf.com <http://www.w7kf.com/> > > > >> On Jan 19, 2017, at 9:44 AM, Richard Fjeld <rpfj...@outlook.com> wrote: >> >> A few weeks ago, someone had ______________________________________________________________ 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 Message delivered to arch...@mail-archive.com
