[ARC5] Visual alignment of BC-454
Kenneth G. Gordon
kgordon2006 at frontier.com
Wed May 22 22:15:08 EDT 2013
Having read (for the umpteenth time) that Signal Corps document on the visual alignment of
the R-390, I have applied that info to my most recent success in using that method to check
the alignment of that 10 meter BC-454, preliminarily to modifying the IF cans for greater
selectivity.
Boy! They sure ARE over-coupled! I'll post photos to my website as soon as I can.
Also, that regenerative 1st IF skews the entire pattern, and THAT is most obvious on the
'scope too.
I am using my HP-8640B as the sweeper, and the B&K sweep/function generator to sweep
the HP. 10 KHz of sweep.
After I have posted the photo, I will ask some help from you folks to help me interpret certain
of what I think are "anomalies" in the trace...but they may not be anomalies either.
Ken W7EKB
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