Chris,
When you say 'without any filter engaged' am I right in assuming that this
means that you have bypassed the KSB2's crystal filter and the K2's IF
crystal filter? If that is the case then the K2's circuits after its TUF
mixer would behave in the same way as a simple direct conversion receiver,
whose bandwidth would be determined by the two crystal filter just ahead of
the product detector and the audio circuits. I don't have my K2 manual here
to see if there is anything else.
However I suspect that the reason that you heard a station almost 20 kHz
above where you were tuning is that it was being 'heard' by a spurious
response of the K2 or your LF converter, or a combination of both. Another
possibility is that a spurious response of your LF converter was hearing
some oscillator in the K2, but I am assuming that the station 20 kHz up was
a real station. If of any help I could run a spurious response check for you
later this evening (our time) if you would let me know the LO frequency of
your LF converter, the LF input frequency to which you were tuned, and the
40m frequency to which your K2 was tuned when you heard the station 20 kHz
above where you were tuned.
73,
Geoff
GM4ESD
----- Original Message -----
From: "Chris Waldrup" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Sunday, August 03, 2008 2:24 PM
Subject: [Elecraft] bandwidth question of K2
When I am set to LSB on 40 meters without any filter engaged, what is the
bandwidth that I can receive?
I am using my K2 as a tunable IF for a LF converter that I experiment with,
and I heard a station last night that was well above where I was tuning
(almost 20 kHz) and I am trying to rationalize that to myself.
Chris
_______________________________________________
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
