Last season while watching Deadliest Catch
on Discover Channel, several times I heard the distress call "PON PON
". Doing a little research (errr... a Google search) I learned that there are several distress signals beyond the venerable and familiar MAYDAY or SOS:
Distress signal: "MAYDAY" (CW: SOS)
Urgency signal: "PAN PAN" (CW: XXX)
Safety signal: "SECURITE" (CW: TTT)
I'm curious why we don't discuss or support the usage of PAN PAN (XXX) and SECURITE (TTT) in amateur radio?