Transcription of Variable Frequency Oscillators (VFOs)
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1. Chapter 10, Harris CRYSTAL SETS TO SIDEBAND. Frank W. Harris 2010, REV 12. Chapter 10. Variable Frequency Oscillators ( vfos ). Sooner or later you'll become frustrated with being stuck on a few crystal-controlled frequencies. You would like to have a Frequency -tuning knob that covers the entire band and not just a few kilohertz. This sounds simple, but isn't. It's difficult because, without the stability of a crystal, an ordinary RF oscillator will drift hundreds of hertz while you're sending. The fellow you're talking to probably has a modern transceiver with a narrow, stable passband.
2. Chapter 10, Harris I was recently talking to a brand new local ham on 40 meters CW. We were chatting at a leisurely 5 words per minute.
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Abstract for Experimental Methods in RF, Radio Frequency, RF Agile Transceiver Data Sheet AD9363, Analog, Analog Devices, Dual Passive Receive Mixer, Dual Passive Receive Mixer with Integrated, Gate Crystal Oscillator, an introduction, RF MEMS, Right Design Of RF/Microwave, Right Design Of RF/Microwave Class A Power Amplifiers