To give you some context, the signal strength required to capture a TV signal in a normal house one story is about a 12 volt radio battery. How do I know this?

To give you some context, the signal strength required to capture a TV signal in a normal house one story is about a 12 volt radio battery. How do I know this? Because it is the first thing you try when getting one of those 150 piece electronic kits out of the Sears catalog. Takes two transistor amply circuits with a square or other wave and the right capacitor combination.