Quote:
Originally Posted by georgeyw
Wow, what a setup, I never would thought it would be possible for a balloon to travel such great distances and such a small radio to transmit so far.
|
It's amazing how far a signal can travel.
Think of the New Horizons probe, it's billions of kilometres away but with the right antenna (a big dish) they can receive signals from it that carry large amounts of data (slowly).
There are some crazy amateurs who build little low power QRP radios and transmit and receive morse code on them with just 1 watt of power or less and manage to communicate across the globe on short wave.