Weather Fax Software
If you''re running a Macintosh all you need is a simple ''patch'' connection wire from the sound output of the HF radio to the sound input of the Mac. Best Mac software (shareware) is http://www.blackcatsystems.com/software/multimodemodes.html ... can recive WeFAX, RTTY Baudot, SITOR*, Morse, etc. $39.00 or $89.00 enhanced version if you''re a HAM. Can also direct download images from satelites with homebuilt quadrafiliar helix antenna (http://www.pilotitd.net/qha.htm). Can also decode NAVTEX on the "SITOR-B" function if your HF can tune to 518kHz (longwave). The RTTY function is good if you cruise Canadian (Maritimes) waters as the Canadian Armed forces broadcast text weather info for RTTY download.
PC/Windoze community also now offer similar easy set-ups as the Mac. Avoid those obsolete WinDoze systems/software that require a (clunky) standalone demodulator/soundcard between the HF radio and the laptop.
In either of the above platforms, the most important item is a good external antenna. Get/build a gooooood antenna - a good cheap temporary boat antenna is a simple wire ''dipole'' raised by a halyard or a length of insulated wire cut to SSB length and run along the backstay - lots of antenna info on the www.hffax.de site. The KEY to good reception is the ANTENNA.
BEST website for WeFAX info = http://www.hffax.de/ just follow the links. All you''ll ever need to know on WeFax is on this ***incredible*** WeFax site!
Best sailor''s text for on-board weather forecasting is "Mariner''s Weather Handbook" Steve & Linda Dashew, IBSN 09658029-2-5 / Lib. of Cong. Card No. 98-093808, Pub.: Beowulf, Inc.
Hope this gets you started. Happy Dx''ing ;-)