[ARC5] ARC-5 with Upper and Lower Sideband switch?

[D C Macdonald]

I'd say it would be pretty simple.  Position the BFO off
center from the IF (say 1.5 kHz) then switch in (or out)
a small capacitance that would put the BFO 1.5 kHz to
the other side of IF center frequency.

As broad as the IF of a BC-455 is, I'd say that unwanted
sideband rejection would be pretty poor, but it would
be noticeable.




----Original Message Follows----
From: "Tom Bridgers" <Tarheel6 at msn.com>
To: <arc5 at mailman.qth.net>
Subject: [ARC5] ARC-5 with Upper and Lower Sideband switch?
Date: Tue, 8 Jun 2004 19:15:45 -0400

There's a BC-455 over on the Bay side (# 5702924629) that claims to have
upper or lower sideband selectable with a switch.  I've seen this done
primarily with crystals on either side of the IF freq., but how would you
accomplish switch selectable upper or lower sideband on an ARC-5 if you
didn't use crystals?  (My assumption is the one on the Bay doesn't use
crystals...)
Thanks in advance for your thoughts,
-tom
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