1_kHz_MODULATOR_FOR_VHF_SOURCE

Published:2009/6/26 3:02:00 Author:Jessie | From:SeekIC

Used with 144-MHz signal generator driving VSWR bridge, for measuring and matching VHF antennas. R1 adjusts frequency of NE555 timer used in place of customary MVBR. Series-pass transistor increases output of MVBR about 2 dB.-J. Reisert, Matching Techniques for VHF/UHF Antennas, Ham Fladio, July 1976, p 50-56.



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