FT-101 VFO
I used LTSpice and Wes’s FBA program (from LADPAC) to come up with a circuit that would provide the needed gain. I needed to get the 290 mV rms signal (across a 50 0hm load) up to the 500 mV rms signal needed by the ADE1 mixer. Above is the amplifier that I came up with. The key here is to adjust R2 and R1 to get the required gain.