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

[jgedde at optonline.net]

Playing with the spectrum analyzer tonight.  I decided to use it to measure
the response of my IF filters.  Using the spectrum analyzer's tracking
generator, I injected a signal into E211 (third mixer input) to drive the IF
filters with the balanced signal it sees in normal operation.  The RF input
to the spectrum analyzer was taken from the IF output.  Attached are the
plots from the filters.  One file contains the responses of the four
mechanical filters, the other file contains response from the 0.1 kHz
crystal filter and the 1 kHz network.  

 

John

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