The isolation between ANT 1 and 2 isn't very good on mine either. If an 80m cw signal is S7 to S9, I can still copy him just fine (s3) when switching to the other ANT which has nothing connected. It might be 30db or so but you would expect much more. Steve N4LQ [email protected] ----- Original Message ----- From: "K2MK" <[email protected]> To: "Elecraft Reflector" <[email protected]> Sent: Friday, December 18, 2009 8:39 AM Subject: [Elecraft] K3 receiver noise questionable test results
> I've hesitated to write because I don't have another rig to compare to my > K3 > and because I use a vertical antenna which is by its nature noisy. I > always > have a high background noise level on all bands. I have NEVER experienced > what some have described as a dead quiet band with signals popping out. > > My K3 is a year old with the latest firmware and all of the hardware mods. > I > have not yet upgraded to a Rev C DSP board. I have tried various settings > for RF gain and AGC THR and SLP. I believe that I am proficient in making > these adjustments. > > One test that I have performed leaves me scratching my head as to its > results. Maybe someone can enlighten me. I tune to a medium strength CW > signal and press my ANT button to switch between ANT 1 and ANT 2. I have > nothing connected to ANT 2. The signal disappears but the background noise > level remains the same. > > 73, > Mike K2MK > > ______________________________________________________________ > 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 -------------------------------------------------------------------------------- No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.716 / Virus Database: 270.14.113/2573 - Release Date: 12/18/09 02:35:00 ______________________________________________________________ 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
