[Amps] W3NQN band pass filters

[Alton McConnell Avon-Cadillac]

I am trying to align some W3NQN band pass filters that I have built for
club use. I am using the design from the May and June 1998 QST article.
 
I am using a HP 8656 Signal generator and a 30 MHz scope for the tuning.
Measuring the return loss with a MFJ 269 SWR analyzer, the best that I
can do is 20db.
 
Any suggestions for alignment of the filters?
 
Alton, NU8L
Amcconnell3 at hotmail.com


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