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Tunes from 14.0 to 14.2 MHz、using stable Vackar design, Protective diode CR1 canbe any silicon rectifier Clamping diode CR3 improves stability by preventing conduction in gate of JFET osciliator Q1,-C,E,Galbreath、Low-Power Solid-State VFO Transmit-ter for 20 Meters,Ham Radio. Nov,1973, p 6-11
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