[youtube]https://www.youtube.com/watch?v=bBcaXTIsQQI[/youtube]
Thought I'd share it here as I've had several people ask me about this circuit.
This circuit allows you to have a variable amplitude pulsing during the 'Gate' time. I originally designed it for use with a PLL so I wouldn't lose lock when the gate turned the circuit off. I only had the circuit on a breadboard and did not write down all the changes I made to the final circuit before I removed it and replaced it with a different circuit so this is the best I can do for now. Its pretty simple once you see how the two signals (Gated pulse train and the Pulsing) are merged using a few 2N2222's and a pot.
