I hardly dare to confess and I die of shame ( sorry Frank ). The > 20 dB difference I noticed in ( audio ) S/N figure does ( of course :-) not really exist. Guess what ? I forgot to switch off the .nt in de ssb mode. I stand corrected ! Lesson learnt.
The SSB ( w.o. DSP ) mode has ( in the same filter width as in CW ) as good as ( audio ) S/N as the CW mode. Sorry having bothered you with unnecessary bw. Fortunately no one did respond. I am happy with my K2, even with the SSB module :-) Tonight I'll sleep well again. Peter, PE1E ----- Original Message ----- From: "PE1E" <[EMAIL PROTECTED]> To: <Elecraft@mailman.qth.net> Sent: Saturday, November 11, 2006 2:59 AM Subject: Re: K2 SSB s/n vs CW s/n ? > My K2 is sn #5632. > Peter, PE1E. > . > ----- Original Message ----- > From: "PE1E" <[EMAIL PROTECTED]> > To: <Elecraft@mailman.qth.net> > Sent: Saturday, November 11, 2006 2:50 AM > Subject: K2 SSB s/n vs CW s/n ? > > > > When I tune my K2 in a carrier ( all HF bands excl. 160 mtrs ) I notice > the > > K2 SSB setting has an over 10 dB worse s/n. > > I really mean worse s/n, no difference in audio ( gain ). > > My calibrated HP 3335A generates the carriers. > > My calibrated HP 8568B spectrum analyzer shows the the audio output S/N. > > > > I also varied in numerous combinations the K2's IF and LF gain pots. > > > > I tuned both SSB and CW for maximum signal strength ( not for the same > > pitch.). > > I guess this does exclude possible non matching filter- and/or bfo > > alignments. > > > > I used the same filterwidths for SSB and CW. > > The S-meter shows no difference between SSB en CW ( I varied the carrier > all > > over S1 until 9+20 ). > > > > What could be on ? > > > > Thanks, > > Peter, PE1E > > > > > > > _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
