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Stable Vfo

2017-09-02 14:59  
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This VFO circuit covers from 2.13 to 2.58 MHz and is intended for use with an external mixer to heterodyne the signal to desired
Stable Vfo

frequencies. Coil data is shown in the parts list. Two power output levels are availablea€”a few hundred mW (0 to 3 dbm) from Q3. Q4 is a class A amplifier for boosting the power to 22 dbm for driving a high-level mixer. The VFO can be operated on other frequencies, with suitable component charges (see the table).



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