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ARRL Products: DXCC, DXing resources and Call Sign listings (More) The Complete DX'er -- Covers nearly every significant aspect of DXing. 3rd edition. The DXCC Yearbook 2007 -- The DXing year-in-review: DXing activities, the Clinton B. DeSoto Cup and DXCC Challenge standings. The ARRL DXCC List -- May 2009 Edition. DX Century Club (DXCC) rules and current entities listing. A "must have" for every DXer! Passport to World Band Radio -- 2009 Edition. The ultimate shortwave listening reference! RSGB Prefix Guide -- The complete guide to prefix identification and information. DXCC listings by prefix, award details, and more. 8th edition.

This is a one-stop Web site for technical characteristics called for in FCC rules § 97.309(a)(4), which reads:

(4) An amateur station transmitting a RTTY or data emission using a digital code specified in this paragraph may use any technique whose technical characteristics have been documented publicly, such as CLOVER, G-TOR, or PacTOR, for the purpose of facilitating communications.

• CHIP64 (61,588 bytes, PDF file)
• CLOVER
• CLOVER-2000
• D-Star (225,010 bytes, PDF file)
• Domino
• FDMDV (PDF)
• G-TOR
• JT65 (114,422 bytes, PDF file)
• MFSK
• MT-63
• Olivia (Draft specification provided by the creator of Olivia, Pawel Jalocha, SP9VRC)
• PACTOR
• PACTOR-II
• PACTOR-III
• PSK31
• Q15X25
• RWOP
• WINMOR (PDF)
• WSPR (MEPT_JT)