160 METER VFO


Posted on Feb 7, 2014

Standard Colpitts oscillator Q1 with emitter-follower Q2 gives dependability and adequate isolation from later stages Zener regulation provides stability even with weak battery Output is about 0. 7 VRMS. Low-level parasitic oscillation may occur about 150 kHz below operating frequency but is suppressed by tuned stages following VFO. L1 is 52 turns


160 METER VFO
Click here to download the full size of the above Circuit.

No. 28 enamel on Amidon T-50-2 toroid. RFC1 is 850 H. -A Weiss, Design Notes on a Moderate Power Solid State Transmitter for 1. 8 MHz, CQ, Nov. 1972, p 18-22, 24, 98, 100, and 102.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Two buttons Safety relay
    Heavy duty battery charger
    Water Flow Gauge using Arduino
    PWM Motor Control circuit
    Solid State Power Controllers
    transducer current limiter circuit
    6 digits dynamic display circuit
    Automatic bathroom light switch circuit CD4022 composed
    Multimeter AC DC converter circuit diagram automatically



    Top