This is G8UHN’s website testbed. This is a test jig for checking frequency response of two filters. The filter at the top is a ceramic 10.7MHz IF filter. Beneath, a SAW filter for a 38MHz TV IF filter. Here is the response for the TV IF filter, displayed on an Arduino based wobulator. The wobulator scans from 10kHz to 150MHz and scan width per division is adjustable. Dynamic range of display is up to 85dB.