Logs may be submitted either online or via mail, but electronic Cabrillo logs are the preferred method. Logs are due within SEVEN (7) days after the event is over. Ĭontest Period: Begins 1800 UTC Saturday, ends 2359 UTC Sunday ,Ĭontest rules are now maintained as a single downloadable document.Ĭlick Here for the Complete ARRL RTTY Roundup Rules (PDF)įor contest information contact or (860) 594-0232 Automated operation is not permitted, each claimed contact must include contemporaneous direct initiation by the operator on both sides of the contact.ĭates: First full weekend of January, but never on January 1. Stations may be worked once per band, regardless of mode.
The term radioteletype is used to describe: From the 1980s, teleprinters were replaced by computers running teleprinter emulation software. The US military used radioteletype in the 1930s and expanded this usage during World War II. Commercial RTTY systems were in active service between San Francisco and Honolulu as early as April 1932 and between San Francisco and New York City by 1934. Later that year, the Radio Corporation of America successfully tested printing telegraphy via their Chatham, Massachusetts, radio station to the R.M.S.
The US Navy Department successfully tested printing telegraphy between an airplane and ground radio station in 1922.
Radioteletype evolved from earlier landline teleprinter operations that began in the mid-1800s. These machines were later superseded by personal computers (PCs) running software to emulate teleprinters. Radioteletype (RTTY) is a telecommunications system consisting originally of two or more electromechanical teleprinters in different locations connected by radio rather than a wired link.
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