[R-390] Spectrum Analyzer Fun: IF filter responses

[Roger Ruszkowski]

John, Thank you for those two images. A real deck with current equipment. An observed output with a classic match to whatthe engineers said was going on. Please read the little numbers on the images John has posted.Mechanical filters with long length skirts. A crystal notch reaching for infinity, just like it says in the books. Amazing  Roger AI4NI