[R-390] R-390 Visual Alignment

[Kenneth G. Gordon]

> Is the visual alignment procedure for the R-390 as described in US AS
> ATC&S ST 32-152 a worthwhile procedure to carry out?

I don't know about using in with the R-390-A, but I know from 
experience, it is really the only way to ACCURATELY adjust 
the IF tuning in multi-transformer IF stages in most superhets.

I have used it with a number of receivers and it always 
produces amazingly better results.

Ken W7EKB