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" <
[hidden email]>
To: <
[hidden email]>
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" <
[hidden email]>
> To: <
[hidden email]>
> 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
> >
> >
> >
>
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