When HN users recommended it
1 HN user recommended this in 2015, in one comment.
20072026
Each tall tick is one HN user's first recommendation. A short tick is the same user again. Click a tick to jump to the comment.
1 HN user recommended this in 2015, in one comment.
Each tall tick is one HN user's first recommendation. A short tick is the same user again. Click a tick to jump to the comment.
You could always use non-normal cell phones. I used a Thuraya sat phone for a while and it worked fine to a satellite 35,786 km away. Apparently the transmission power is about 2W, they cost about the same as an iPhone and weigh 140g or so. Mine worked fine off a solar panel. So these things can be dealt with, presumably more easily for a ballon 30km away than a geostationary satellite.
(Here's one on amazon http://www.amazon.com/Thuraya-XT-LITE-Satellite-Phone/dp/B00... )