In article , Brian Hill wrote:
"Randy or Sherry Guttery" wrote in message

To align the IF correctly - one needs a sweep generator. And yes - not
aligned correctly - they would imitate the nearest "barn door" for
bandwidth.

Yes a sweep gen and oscilloscope are nice in this regard but the job can be
done correctly using a accurate sig gen or at least close enough for this
type of rig.

I believe that the IF on the AR-88 is peaked and not staggered, which
means you can indeed get away with just a signal generator and a scope.

Again, the IF on the AR-88 may be pretty tight for something with only
LCR networks, but it's not anywhere near as tight as crystal or mechanical
filters will allow. This is either a substantial advantage or disadvantage
depending on your application.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."