EMRFD Message Archive 1492

Message Date From Subject
1492 2008-03-02 19:06:35 Pat Bunn Spectrum analyzer and tracking generator
It just got a tracking generator for my old HP 141T and I am amazed at how it is helping me with filter design and construction.

A first try at a 50 mhz triple tuned filter on double sided board in a Hammond box - a disaster - horrible stopband with a peak 10 db down at 62 Mhz and the same type peaks below 50 mhz.

I built a double sided box around the exact same filter and put BNC connectors on both ends. Even without a cover - absolutely beautiful filter just as designed.

The book doesn't lie -


[Non-text portions of this message have been removed]