How are Calling Frequencies Chosen?
I am curious how you chose the calling frequencies for VarAC and SafecomLink? Do you run listening tests on the allowed digital frequencies? I ask as I would like to add some Marine SSB frequencies to my own dropdown list. I have the list of allowed bands for Marine-Digital. This would be for communication with those with marine band permissions and do not have amateur licenses. I have not fully researched what is allowed yet.
Thank you,
Harley
KN7H
64 Views

Choosing calling frequencies is a long and carefully considered process. It takes into account existing calling frequencies, IARU band plans, compliance across all three IARU regions, bandwidth limitations for data communications, the use of unattended stations, and the need for continuous monitoring of the frequency.
The resulting frequencies may not always be optimal for every use case, but they are selected with all of these factors in mind.
Good luck with selecting calling frequencies for sailors. Please let us know which frequencies you ultimately choose. We may consider creating a Sailors Edition in the future, and those frequencies could potentially become the default calling frequencies for that version.