Hi JohnBrown,
Good point. I'll bet that NASA can detect the reflection of Zach's transmitter signal bouncing off the moon! Since Zach's receiver and antenna aren't nearly as good as NASA's, may be he should cool his radio in liquid nitrogen to get its noise level down.
As for gain, he can cascade a bunch of current-feedback ICs. They must be cooled too.
Bandwidth and interference rejection? Just a bunch of LCs, but difficult to tune simultaneously.
Someone must make a good "walkman" FM radio, but how does Zach rate them without listening to the exagerated claims by their manufacturers?
Hi Zach,
Did you Google for "walkman radio sensitivity test"? Consumer Reports mag?