PRECISION_VFO

Published:2009/7/2 9:15:00 Author:May | From:SeekIC

Permeability-tuned oscillator provides stability and linearity at low cost for receivers with 160-meter tunable IF stages. L1 has 28 turns No. 36 enamel closewound on J. W. Miller form 64A022.2. Article covers construction of tuning dial, incuding contouring of L1 core to give good dial linearity. Frequency coverage is 2.255-2.509 MHz. Direct-reading dial is accurate within 1.5 kHz over entire 250-kHz tuning range.-W. A. Gregoire, Jr., A Permeability-Tuned Variable-Frequency Oscillator, QST, March 1978, p 26-28.



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