[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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