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.
Repeaters â what are they and how to use them. More hams use frequency-modulated (FM) voice than any other communications mode. Most hams have an. FM rig of some type. They use it to keep in touch with their local friends. Hams often pass the time during their. morning and evening commute talking on the air.