Variable Frequency Oscillators (VFOs)
3. Chapter 10, Harris THE VFO CIRCUIT The basic oscillator In principle the VFO is almost the same as a quartz crystal oscillator. The crystal is
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Chapter 6 BUILDING A HOMEBREW QRP - QRP ARCI
www.qrparci.org2. Chapter 6, Harris Unfortunately crystal control means you must order $18 custom crystals for your favorite frequencies in each band.
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www.qrparci.org4. Chapter 12, Harris RF input drive, the transistors immediately ran away and drew huge currents. Gee, something must be wrong with the bias circuit!
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