Will the revision be generic to the extent that it will also improve the readings for radios without the KAT3? My variations are not as great as Jack's, I suspect due to not having the KAT3, but my readings are consistently lower than Jack's, ie. 1.6 on most bands with a 2.0 load. Not a big deal, but as long as you're in there tweaking the code, can you verify that it works with non-KAT3 radios as well?
73, Larry N8LP wayne burdick wrote: > > Great data, Jack. We've been testing this, too, and we know why the > K3's readings differ. > > A firmware change will be made to improve the accuracy in general. But > part of the difference on the higher bands is due to strays in the > KAT3 module. These strays can be tuned out by the KAT3 itself, thus > presenting the correct load to the K3 internally. But an external > instrument is on the other side of the KAT3 and thus sees a slightly > different match. > > We'll post additional details soon. Meanwhile, no one need worry about > this apparent discrepancy. The ATU is cancelling its own strays, and > the SWR bridge is correctly reporting the load presented to the > transceiver internally, which is the important thing when matching the > rig to its load. > > 73, > Wayne > N6KR > > > ---- > http://www.elecraft.com > > On Nov 8, 2009, at 7:18 PM, "Edward Dickinson, III" > <[email protected] > > wrote: > >> _____ >> >> From: Jack Smith [mailto:[email protected]] >> Sent: Sunday, November 08, 2009 10:00 PM >> To: Edward Dickinson, III >> Subject: Re: [Elecraft] K3 SWR Accuracy - reprise >> >> Dick: >> >> http://www.cliftonlaboratories.com/swr_accuracy.htm >> >> I posted a message to the Elecraft reflector about the page being >> available >> but it has not shown up after an hour and a half. >> >> Jack K8ZOA >> >> >> Edward Dickinson, III wrote: >> >> Hi Jack. >> >> >> >> I extend invitation to apply your expertise regarding the matter being >> >> addressed in above referenced discussion. >> >> >> >> >> >> Best regards, >> >> >> >> Dick - KA5KKT >> >> >> >> >> >> >> >> >> >> ______________________________________________________________ >> 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 > ______________________________________________________________ > 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 > > -- View this message in context: http://n2.nabble.com/FW-K3-SWR-Accuracy-reprise-tp3970987p3973505.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
