Anyone know at S/N # the new K3's started being changed to new resistor? Thanks and 73,
Bill N4ZI --- On Wed, 11/12/08, Joe Subich, W4TV <[EMAIL PROTECTED]> wrote: > From: Joe Subich, W4TV <[EMAIL PROTECTED]> > Subject: RE: [Elecraft] [K3] in-band-IMD test > To: "'Jack Smith'" <[EMAIL PROTECTED]>, [email protected] > Date: Wednesday, November 12, 2008, 4:37 PM > > This is an issue with the isolation transformers in the > LINE > > OUT ports. I've measured similar levels, and > shown how they > > might be reduced. > > > http://www.cliftonlaboratories.com/elecraft_k3_receive_audio.htm > > Elecraft have changed the series resistors from 604 to 50 > Ohms > in current production. See the October schematic updates > on > their web site. > > I'm assuming a change in the schematics indicates the > modification > is now "approved." > > > 73, > > ... Joe, W4TV > > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of > Jack Smith > > Sent: Wednesday, November 12, 2008 4:24 PM > > To: Alexander Ponomarenko; 'Elecraft' > > Subject: Re: [Elecraft] [K3] in-band-IMD test > > > > > > Alex: > > > > This is an issue with the isolation transformers in > the LINE > > OUT ports. > > I've measured similar levels, and shown how they > might be > > reduced. > > > http://www.cliftonlaboratories.com/elecraft_k3_receive_audio.htm > > > > You will not see the same degree of distortion on the > > > headphone output > > port. > > > > Jack K8ZOA > > > > > > Alexander Ponomarenko wrote: > > > GA for all K3 users. > > > So many guys has talks about perfect audio sound > of K3. > > > So many talks about "analog K3 sound" > on e-ham. > > > But how it possible if K3 have the so bad in-band > IMD? > > > You can read about > "in-band-IMD-measurements" in russian here: > > > > > > http://forum.cqham.ru/viewtopic.php?t=17119&postdays=0&postorder=asc&&; > > > start=0 > > > > > > Or you can simply look on the pictures, where is > in-band > > > IMD-measurements of > > > SDR-5000, IC-7800, IC-756pro2 and K3 - so bad for > HI-FI sound > > > announced by many K3-users: > > > it's for S9-level > http://forum.cqham.ru/download.php?id=31966 > > > and it's for S9+50 level > http://forum.cqham.ru/download.php?id=32004 > > > and even measurements of S/S+N-rate is poor: > > > http://forum.cqham.ru/download.php?id=32003 > > > > > > Alex de UR5LAM > > > RU-QRP-C#103 > > > 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 _______________________________________________ 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
