Excerpted from the SailMail Primer page at: SailMail Primer
We will be sailing from X to Y. Will SailMail provide adequate coverage?
The short answer is yes. SailMail has stations scattered around the world. Members with good radio
installations and who are reasonably clever at picking times, stations, and frequencies have used SailMail from everywhere in the world that you can take a boat. The longer answer follows:
Each SailMail station is easily used at ranges out to 4000 miles, and is useful at ranges out to 8000 or more if you have a good radio
, tuner, and ground installation
, if you use a PTC-II modem
, and if there are no nearby sources of interference
. It also helps if you are reasonably skilled at choosing the best station, time, and frequency.
You may find it helpful to download, install, and use the propagation program for Airmail from the download page on the SailMail website. But remember that it is only a computer projection, so use it as a guide but not as the "bible". As you sail around the world and your location relative to SailMail stations slowly changes, you will get pretty knowledgeable about picking times, stations, and frequencies. Comparing notes to other SailMail users that you run across will also help you pick times, stations, and frequencies.
SailMail Stations map: