18_19_MHz_BANDPASS

Published:2009/7/3 2:25:00 Author:May | From:SeekIC

Butterwolth bandpass filter, suitable for use with broadband preamp, helps reject out-of-band signals. Filter also protects preamp from signals across response range from broadcast band through VHF. C1 and C2 are mica trimmers. L1 and L2 have 30 turns No. 22 enamel on Amidon T68-6 toroid cores to give 5.1 μH.-D. DeMaw, Beat the Noise with a Scoop Loop, QST, July 1977, p 30-34.



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