Locking the K3 on TX prevents the click on key release. Of course the receiver does not work well with the TX locked on. :-)
Any help or suggestions appreciated. ----- Original Message ----- From: "Tom W8JI" <[email protected]> To: <[email protected]> Sent: Sunday, November 20, 2011 1:10 PM Subject: [Elecraft] K3 clicks on release > I'm working on duplexing on 160 meters, so I have not checked other bands. > > When the key line on the K3 is released, there is a very broad bandwidth > click on a receiver. This is with a transmit antenna about 1000-3000 feet > from the RX antenna. I am in a good low noise location. > > This click occurs: > > 1.) with the K3 VOX on or off. That's right, it happens with sidetone only > and no RF!! > > 2.) It goes away when I pull the RF output coax from the K3, so it is out > the antenna port. > > 3.) The click extends up to around 1980 kHz, and is unaffected by the VFO > frequency in the K3 (this makes some sense, since no real RF is involved) > > 4.) Level increases as I lower RX frequency from 1980 kHz or so down to > about 1800 kHz, then it starts rolling off again (but that could likely be > because I have HP filters for the AM BCB). It is pretty strong at 1800 > kHz, > I'd guess about 40 dB out of noise floor or more. > > 5.) I hear a similar click when I change bands in the K3 without actually > transmitting!!! When I hear the K3 relays change something inside going > from > 160 to 40, the other outside receivers "pop" and the S meters go over S 9 > in > the pop. > > 6.) It pops going from 20 meters to 30 meters (either direction), without > transmitting. This goes away when I take the TX antenna off the K3. The > same > is true for 30 to 40. 40-80, but NOT so much if at all between 80-160. > > 7.) Some really loud relay in the K3 is clicking when this happens, but > the > same mechanical noise happens going from 160-80 with no radio click. > > 8.) This happens with VOX on or off on CW. > > 9.) This happens in SSB mode or any other mode > > 10.) This happens when I change bands with the memory > > 11.) Don't hear it on 80 at all. > > 12.) on 160 meters, with VOX off on CW mode, I can hear like a loud wide > phase or composite noise while sending!! With the K3 on 1805 kHz the noise > is from 1803.6 to about 1806 kHz. This noise always follows the VFO > around, > while the click does not. Even with no RF output (the VOX is off) I have > this noise. > > I have the latest firmware and reset, etc etc. It did it with old firmware > that was about a year old. No change. > > Any ideas?? > > 73 Tom > > > > > > > > > > ______________________________________________________________ > 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 ______________________________________________________________ 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
