Bob,
With due respect to Ron, IF Shift is very easy to design into a single
conversion receiver with a selective IF filter *provided* that the IF to
Audio detector is some form of mixer with BFO injection, such as a product
detector. It would probably be difficult to implement in the K2 not because
of the required circuits, which are already there, but because of the
firmware changes and related alignment problems. Also the control needs to
be manual on the front panel, not via some menu.
73,
Geoff
GM4ESD
----- Original Message -----
From: "Bob Tellefsen" <[EMAIL PROTECTED]>
To: "Ron D'Eau Claire" <[EMAIL PROTECTED]>; "'Jeff Kinzli'"
<[EMAIL PROTECTED]>; <elecraft@mailman.qth.net>
Sent: Thursday, February 08, 2007 4:40 PM
Subject: Re: [Elecraft] IF shift
Hi Ron
"One of the strengths of the K2 is its single-conversion design. That is,
in
part, responsible for the extremely good specifications the receiver
enjoys.
However, i.f. shift such as other rigs often feature require a
multiple-conversion design with all the issues that come with additional
mixers, oscillators and complexity. "
Well, I'm not sure this is totally true. Before I got my first K2, I used
a
Kenwood TS-180S which had a very nice IF shift feature. It was also a
single conversion radio, with an IF of about 8.3 MHz. I loaned the manual
to Eric and Wayne so they could see how it was done.
Sure wish there was a way to implement it in the K2.
73, Bob N6WG
The Little Station with Attitude
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