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:

New Circuits

.

 


Popular Circuits

AC Motor Speed Control circuit
Level sensor for cryogenic fluids
Electronic Coin Toss
Final Project
Audio Oscillator with Frequency Counter
ultrasonic transmitter circuit
Simple Active Mixer on sinlge voltage
UC3906 battery charger controller circuit
LED-Circuits 4
2001 monte carlo: no wipers noturn signals none of the dash lights
Reverse engineering an MB Electronic Simon game
ZX-Printer Service Manual
INA321 322 a direct drive capacitive input of the A D converter Figure
Low noise preamplifier circuit diagram of the speech
Combustible gas alarm circuit



Top