5 ms·
The transmitter uses only 22 watts. A cell phone is about 2 watts. It's striking how little it takes.
by mturmon 12y ago
The transmitter uses only 22 watts. A cell phone is about 2 watts. It's striking how little it takes.
- tjohns 12y agoThe choice of antenna is a lot more important than transmit power. Especially for an application like this where high-gain is needed. It also helps to be in space, where there's nothing to obstruct your signal. Barring obstructions, radio waves propagate indefinitely.
- darkmighty 12y agoThere's still inverse square law at play, although it's much more forgiving than atmospheric attenuation (logarithmic db loss with distance versus linear).