K3 Rx Antenna Isolation
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I'm have poor isolation between the transmit antenna (ANT1) and my Beverage (RX ANT IN).
I have to switch to ANT2 to get rid of the noise from the transmit antenna. As new as I am to the K3 I may have an option set wrong. Thanks, Ed _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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On Fri 8 Feb 2008 at 01:07:35 EST, Ed Gilliland (W5TM) wrote ..
I'm have poor isolation between the transmit antenna (ANT1) and my Beverage (RX ANT IN). I have to switch to ANT2 to get rid of the noise from the transmit antenna. As new as I am to the K3 I may have an option set wrong. -- Ed, Wayne's recent post entitled "KXV3: (1) RX ANT signal level during TX; (2) spectra at buffered IF output" may address your question. You can find his post in the online Reflector archives at ... http://mailman.qth.net/pipermail/elecraft/2008-February/082024.html 73, Gary KI4GGX _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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Perhaps Ed will clarify, but my take is that Ed's post is a different issue. I believe he is saying that while he's in RECEIVE mode with the RX ANT selected, there's leakage of the receive signal on the transmit antenna feedline into his receiver - poor isolation in the receive antenna selection.
Personally, I haven't seen this but I haven't listened specifically for it either. 73, Barry N1EU
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Hi Barry,
Yes it's on receive. It's more than leakage, more like both antennas are connected during receive. Ed ----- Original Message ----- From: "Barry N1EU" <[hidden email]> To: <[hidden email]> Sent: Friday, February 08, 2008 6:29 AM Subject: RE: [Elecraft] K3 Rx Antenna Isolation > > Perhaps Ed will clarify, but my take is that Ed's post is a different > issue. > I believe he is saying that while he's in RECEIVE mode with the RX ANT > selected, there's leakage of the receive signal on the transmit antenna > feedline into his receiver - poor isolation in the receive antenna > selection. > > Personally, I haven't seen this but I haven't listened specifically for it > either. > > 73, > Barry N1EU > > > > Gary W. Hvizdak wrote: >> >> On Fri 8 Feb 2008 at 01:07:35 EST, Ed Gilliland (W5TM) wrote .. >> >> I'm have poor isolation between the transmit antenna (ANT1) and my >> Beverage >> (RX ANT IN). I have to switch to ANT2 to get rid of the noise from the >> transmit antenna. As new as I am to the K3 I may have an option set >> wrong. >> >> -- >> >> Ed, >> >> Wayne's recent post entitled "KXV3: (1) RX ANT signal level during >> TX; >> (2) spectra at buffered IF output" may address your question. You can >> find his post in the online Reflector archives at ... >> http://mailman.qth.net/pipermail/elecraft/2008-February/082024.html >> >> 73, >> Gary KI4GGX >> >> _______________________________________________ >> Elecraft mailing list >> Post to: [hidden email] >> You must be a subscriber to post to the list. >> Subscriber Info (Addr. Change, sub, unsub etc.): >> http://mailman.qth.net/mailman/listinfo/elecraft >> >> Help: http://mailman.qth.net/subscribers.htm >> Elecraft web page: http://www.elecraft.com >> >> > > -- > View this message in context: > http://www.nabble.com/K3-Rx-Antenna-Isolation-tp15350020p15354381.html > Sent from the Elecraft mailing list archive at Nabble.com. > > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by Gary Hvizdak
Hi Guys
I found the mistake.. I have a Microham Keyer between the mike and K3 Somehow it messed up my settings so that i have output on 40 and 20 and if i switch to DATA A i have output on the other bands... So no K3 fault.... my fault not looking into the routing... Why it changed dont know.... let the List know if I foung it... Thanks for responding to my call.. 73 de Tom HB9DOD KL5X K3 #29 -- GMX FreeMail: 1 GB Postfach, 5 E-Mail-Adressen, 10 Free SMS. Alle Infos und kostenlose Anmeldung: http://www.gmx.net/de/go/freemail _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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