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Vhf-modulator

2017-09-11 00:21  
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This circuit uses an oscillator (2N2222) and a diode Dl as a nonlinear mixer. The frequency is set by a slug in Ll.
Vhf-modulator

RFCl, Cl, and RFC2 form a low-pass filter to pass video and block rffrom the video source.



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