I've noticed that occasionally after eating foods high in carbs (usually a big bowl of cereal) I'll start to pass out a couple hours after eating. If I'm lying down, it's very difficult not to pass out.
Packet radio is a form of packet switching technology used to transmit digital data via radio or wireless communications links. It uses the same concepts of data transmission via Datagram that are fundamental to communications via the Internet, as opposed to the older techniques used by dedicated or switched circuits.
A shortwave radio is specially designed receiver that receives shortwave radio stations from places and countries far away from where you live and are hidden in between the standard AM and FM band on frequencies from about 3Mhz to 30Mhz.