If tough, dried-out roast beef haunts you in your dreams, you know the importance of not overcooking meat. The more beef cooks, the less succulent it becomes; quality declines most quickly past medium, or an internal temperature of 145 degrees Fahrenheit. That's the temperature recommended by the U.S. Department of Agriculture, but for juicy, rare roast beef, you can't cook it that much.
Automatic Packet Reporting System (APRS) is a digital communications system that uses packet radio technology to transmit information and text messages over amateur radio.
Ham radio is different from Citizens Band (CB), Family Radio Service (FRS), and the General Mobile Radio Service (GMRS), which only allow local communications using strictly limited modes and frequencies (although some CB operators do manage to talk fairly long distances using illegal linear amplifiers).