Handheld Radios and Amateur Radio Satellites!

I have recently taken an interest in satellite communications by handheld radio. This is basically using a handheld radio transceiver, a walkie talkie if you will, and a handheld antenna to send your signal up to a passing satellite and converse with someone else doing the same thing in real time.
This excellent video shows just how it's done and is part of what encouraged me to try this:

How to work amateur radio satellites with your handheld (HT) radio from moleculo on Vimeo.