Thanks Wayne, that's helpful. Just want to be sure I've optimised 6m performance and passed on any suggestions to my buddy. 73 David G3WGN
Sent from my Samsung smart (ish) phone -------- Original message -------- From: Wayne Burdick <[email protected]> Date: 23/06/2015 19:39 (GMT+01:00) To: David Aslin G3WGN <[email protected]> Cc: [email protected] Subject: Re: [Elecraft] 6m birdies and K3S and/or new synth boards David, When we designed the K3S, we very carefully evaluated internally generated spurs on all bands. We found that the KSYN3 and KSYN3A had roughly the same number. This is consistent with both being high-level signal sources; you can't get rid of spurs entirely. All but a very few are masked by band noise, as well. 6 meters was no exception. Both the old and new synths show some spurs on this band, and we adjusted PLL divider ratios, etc., to minimize them. But the new synth -- in our tests -- doesn't have any more than the old. I use a pair of the new synths in my lab K3S, as well as the KXV3B, which includes premamp 2 (-145 dB MDS). I've had no problem with spurs on 6 meters. In some cases, it could come down to how the cables are oriented. Make sure you're orienting the cables as described in the manual, and if you feel that you have excessive spurs, email customer support. If we come up with any improved cable routing, we'll post to the list. 73, Wayne N6KR On Jun 23, 2015, at 8:52 AM, Dave G3WGN M6O <[email protected]> wrote: > Is there anyone out there yet who has done a detailed study of 6m birdies > with the new synth and either external or internal preamp? A good friend > with an early K3 is reluctant to upgrade to K3S as he hears a couple of dozen > birdies on 6m with antenna disconnected. > So how has this aspect of K3 performance evolved from early K3 (his is S/N > sub-100) to the K3S? > 73 > David G3WGN M6O > Member of the 6Gs team at E6GG in September 2015 > www.e6gg.com<http://www.e6gg.com> > Work us on as many bands as you can! > > > > > > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/6m-birdies-and-K3S-and-or-new-synth-boards-tp7604211.html > Sent from the Elecraft mailing list archive at Nabble.com. > ______________________________________________________________ > 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 > Message delivered to [email protected] ______________________________________________________________ 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 Message delivered to [email protected]
