I have two TX
RX Systems Vari-Notch cavities made for 450-470 MHz. 
The tags have the following
information:
Filter Model 15-70-25
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Filter Type
Vari-Notch
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Frequency Band (MHz) 450 -
470
Pass Freq. (MHz) 462.975
Insertion Loss (db) 0.6
Reject Freq. (MHz)
467.975
Attenuation (db) 49
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