Low-cost Amateur Radio balloon repeater
/Spanish radio hams have used two low cost ($45) handheld FM transceivers to make a cross-band repeater which they then launched on a High Altitude Balloon (HAB).
The balloon flight lasted 2 hours 44 minutes during which 179 contacts were made, the furthest was over a distance of 670 km.
Read the story in Google English - http://tinyurl.com/Baofeng-Repeater
