What about more extreme cases, say Castaway (movie) type situation. Stranded on an island in middle of nowhere.
But conveniently, one of the packages has a functional 2m battery powered radio and a Yagi too. There’s no one you can make contact with, except… the ISS.
What if the ISS was the only station you could contact?
“Hello International Space Station, I am stranded on an island after a plane crash. Can you help?”
One of the coolest things in my opinion about radio is the ability to skip off the upper atmosphere and bounce a signal back down halfway across the globe. You can also bounce a signal off the moon.
2m doesn’t bounce off the atmosphere. You really need 10m for that. 6m in the mist perfect ideal scenarios but it’s still very rare (and in this scenario you aren’t gonna know when). EME (the moon stuff) is also pretty tricky and requires a lot of power because of how messed up the signals get in the process.
What about more extreme cases, say Castaway (movie) type situation. Stranded on an island in middle of nowhere.
But conveniently, one of the packages has a functional 2m battery powered radio and a Yagi too. There’s no one you can make contact with, except… the ISS.
What if the ISS was the only station you could contact?
“Hello International Space Station, I am stranded on an island after a plane crash. Can you help?”
One of the coolest things in my opinion about radio is the ability to skip off the upper atmosphere and bounce a signal back down halfway across the globe. You can also bounce a signal off the moon.
2m doesn’t bounce off the atmosphere. You really need 10m for that. 6m in the mist perfect ideal scenarios but it’s still very rare (and in this scenario you aren’t gonna know when). EME (the moon stuff) is also pretty tricky and requires a lot of power because of how messed up the signals get in the process.