- by:Al Williams
Morse code qualifies as a digital mode, although organic brains are somewhat better at copying it than electronic ones. Ham radio operators that did “phone” (ham-talk for voice) started out with AM modulation. Sometime after World War II, there was widespread adoption of single side band or SSB. SSB takes up less bandwidth and is more reliable than AM modulation. On the digital side, hams turned to different and more sophisticated digital transmission types with computers pushing bandwidth down and reliability up. However, a recent trend has been to encode voice over ham radio–sort of VoIP with radio instead of Ethernet–using an open source program called freedv…..
The Burger King BurgerFest is so big, it’s out of this world! A Burger King associate uses a ham radio to communicate with space people. However... Read more
The 2U Zhou Enlai CubeSat, developed with primary and middle school students in China, is expected to launch on January 19. The satellite is named aft... Read more
The SSB version of ARRL Rookie Roundup is back on Sunday, April 19. The event gets under way at 1800 UTC and continues through 2359 UTC. For th... Read more