Variable Frequency Oscillators (VFOs)

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1. Chapter 10, Harris crystal SETS TO SIDEBAND Frank W. Harris Chapter 10 Variable Frequency Oscillators (VFOs) It won t be long before you become frustrated with being stuck on one crystal controlled Frequency . 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 hard 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.

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.

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