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Variable Frequency Oscillators (VFOs)
www.radiohamtech.comCRYSTAL SETS TO SIDEBAND ... 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 …
Variable Frequency Oscillators (VFOs)
www.qrparci.orgLow frequency VFOs drift less than high frequency VFOs For HF transmitters running on 160 meters (1.8 to 2.0 MHz) or on 80 meters (3.5 to 4.0 ... The values are extremely hard to calculate because C3, C4 and even the 1N914 diode are part of the capacitance. Don’t try too hard to get the values