David, Your friend states there are 2 dozen birdies on 6 meters with the antenna DISCONNECTED. This tells me nothing. Please tell him to connect a RESONANT 6 meter antenna to the radio then tell me how many birdies he hears. 73, Brian K3USC
> On Jun 23, 2015, at 1:41 PM, Wayne Burdick <n...@elecraft.com> wrote: > > 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 <da...@aslinvc.com> 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: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 n...@elecraft.com > > ______________________________________________________________ > 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 k3...@arrl.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
