Published:2009/7/19 22:55:00 Author:Jessie | From:SeekIC
Varactor-tuned transistor amp lifer bulb into tip of conical spiral antenna is tuned from 120 to 240 Mc by varying varactor voltage from 0 to 40 v d-c.-J. F. Rippin, Making the Antenna an Active Part-net, Electronics, 38:16, p 93-96.
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