This past weekend, I made my first RTTY contacts ever, in the CQ Worldwide Prefix RTTY Contest.
RTTY , or radio teletype(usually pronounced “Ritty”) is a holdover from older days of digial communication, and is based on the interactions of old teletype machines, which would generate the necessary tones to communicate letters and symbols over the air. While the original machines used specialized typewriters and punched paper tapes, today all the encoding and decoding is done via a connection to a computer’s soundcard.
The WPX series of contests is unique in that, rather than earning point multipliers based on geography (say, by individual countries or states), multipliers are earned for each unique prefix of the stations you work. A prefix is the first few letters and numbers of your station callsign – in my case, KK9. This makes it easier for a smaller station like mine to garner interest and be valuable to others as a contact – you don’t need to make yourself heard over any particular distance, so long as your prefix is new to the person on the other end.
My best DX for this contest was 4M1K (Venezuela, ~2560mi) and P49X (Aruba, ~2300 mi), both all-time new ones for me! For brief moments on 20m on Sunday afternoon, I heard both Italy (IQ9UI) and France (F6CXJ) for the first time, but sadly couldn’t make contact with either of them. All in all, I made 18 contacts with 17 prefixes.
Here’s to more countries on more modes. Hear you on the air!