Another way to do what you want might be to switch some attenuation into the receive path during transmit. I assume you are using the RX antenna port for the beverages. The switching could be done with pin diodes with the timing tuned to allow QSK.
Hope this helps. Brian, K0DTJ > On Dec 20, 2014, at 12:45, Jim Miller <j...@jtmiller.com> wrote: > > I use and like QSK on my K3 but I'm now looking at detuning my 160 inverted > L to avoid reradiation into my beverages when in receiving. > > I'm looking at what it will take to do that and it appears that if the 160 > inv-L is just deselected by the remote DXE relay box it will just be an > ungrounded 1/4 wave which shouldn't present problems on 160. > > I could implement a sequencer in the shack to do this by interrupting the > relay select line that controls the 160 antenna on a per band basis but > that leaves the question of what to do about QSK since the relay is > specified to operate no sooner that 15mS. That will likely impact the clean > CW and be undesireable. > > I can decode the band info and get the info about whether it is in TX or RX > mode and probably inhibit the K3 until the delay has expired. > > But I'd need to kill QSK on 160 alone to do this. > > Is there a way to do QSK on a per band basis? > > 73 > > jim ab3cv > ______________________________________________________________ > 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 huntin...@coastside.net ______________________________________________________________ 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
