Hi Alex, What is the mod/problem found??
73, Julius n2wn Alexander Ponomarenko-5 wrote: > > Hi for all K3-users, > > Some weeks we searched for the reason of bad K3's sound and high level > IMD. > We tried to replace resistors on the "line-out board". But it is > ineffectual. > Fortunately, Vlad UN7GZ has found out the problem. > Vlad has analysed the K3-scheme and has found some discrepancy on the > RF-board. > This problem in poor-quality assembly. > I also have made necessary corrections on my K3. The result are > impressing! > Now I hear the sound is much more better (like my K2). > > You can see all of these results: > > here is plot BEFORE "modification" (you can see terrible "spur" near > 12kHz) > http://forum.cqham.ru/download.php?id=32620 > > here is plots AFTER "modification": > http://forum.cqham.ru/download.php?id=32621 > http://forum.cqham.ru/download.php?id=32651 > http://forum.cqham.ru/download.php?id=32650 > > And of course you can read about it here in Russian: > http://forum.cqham.ru/viewtopic.php?t=17137 > > All these results is equal for ALL of K3-outs (both phones-outs and > line-out). > > 73! > Alex UR5LAM > RU-QRP-Club#0103 > K3/100F #0568 > > _______________________________________________ > Elecraft mailing list > Post to: [email protected] > 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://n2.nabble.com/It-have-to-work-better%21-tp1572093p1572152.html Sent from the [K3] mailing list archive at Nabble.com. _______________________________________________ Elecraft mailing list Post to: [email protected] 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
