80_METER_BANDPASS

Published:2009/7/3 4:59:00 Author:May | From:SeekIC

Four-resonator filter for use in 80-meter amateur band has 100-kHz bandwidth, 4.4-dB insertion loss, and 6-60 dB shape factor of 5.16. Filter was designed and aligned at 3.75 MHz; realignment at 3.6 and 3.9 MHz yielded Similar results Artiole covers theory．construction, and adjustment-W Hay-ward,Bandpass Filters for Receiver Preselectors,Ham Radio,Feb,1975,p 18－27.



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