Building a transmitter part 4: the voltage controlled oscillator or VCO

I obtained my ham radio license more than twenty years ago and I have never build my own radio transmitter. Until now. I will use discrete components and every building block gets its own episode. This fourth episode is about the the voltage controlled oscillator or VCO. **Designing the PLL:** [https://odysee.com/@MeesElectronics:8/Building-a-transmitter-part-1-the-PLL:2](https://odysee.com/@MeesElectronics:8/Building-a-transmitter-part-1-the-PLL:2) **Designing the programmable divider:** [https://odysee.com/@MeesElectronics:8/Building-a-transmitter-part-2--the-frequency-divider:4](https://odysee.com/@MeesElectronics:8/Building-a-transmitter-part-2--the-frequency-divider:4) **Designing the the mixer and reference oscillator:** [https://odysee.com/@MeesElectronics:8/Building-a-transmitter-part-3-the-mixer-and-reference-oscillator:c](https://odysee.com/@MeesElectronics:8/Building-a-transmitter-part-3-the-mixer-and-reference-oscillator:c) **More information and all the design files:**