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_VOLTAGE_TUNED_VHF_OSCILLATOR

2016-08-02 04:50  
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_VOLTAGE_TUNED_VHF_OSCILLATOR
This VHF VCO circuit is suitable for 30 to 200 MHz. Q1 can be replaced by a 2N3563 for operation above 100 MHz. L1 is chosen to resonate to the desired frequency with the varactor capacitance of 40 pF. Other vatactors can be substituted or two back-to-back vat-actors can be used for better linearity, depending on the application.