My Voltage Tuned VFO - Have I gone crazy?
I built a 3.5X MHz scratch voltage controlled VFO for home brew radios. No PLL circuit -- a free running variable frequency oscillator. Have I gone mad? Perhaps. Complete design + analysis, plus a short assessment of frequency stability due to temperature changes at 2 frequency bands.
* RESOURCES *
Brad's VFO Story How to make a temperature stable VFO
https://youtu.be/kcc8V5IMmlw
SolderSmoke Daily News -- Ham Radio Blog
https://soldersmoke.blogspot.com/
Iulian, YO3DAC - VA3IUL Website
https://www.qsl.net/va3iul/
really good
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