Having no RSL in Ofcom terms states I am in England! The prefix of course indicates the actual territory from which one is operating. It would be unambiguous were you or I to operate as HB0/G4TJC or HB0/MM0FMF respectively and seems entirely logical. Is someone signing HB0/EA2xxx in the “2” region of Spain - of course not.
I think we do have a “home call sign” insofar as we have the call sign we would use at our main (registered) station address. Anywhere else I would be signing /A or whatever. Adding the # to the licence document for consistency of definition for UK operation is unfortunately a recipe for confusion where international operation is concerned.
The problem stems from the asymmetric nature of the UK (and Crown Dependencies) RSL system. If it’s not somewhere else it defaults to England. This reflects the asymmetric nature of our constitutional arrangements and harks back to a time when “English” was more-or-less a synonym for “British”. Anywhere with a proper federal setup would never invent something like our RSLs.
And what stands out as a discrepancy is the Intermediate call sign format. With these we use ‘E’ for England. So what’s going to happen if ever UK joins ECC/REC/(05)06, allowing CEPT operation for intermediate stations? (HB0, for example, is already a signatory)
I suppose this might even be happening now, as some administrations may already allow 2E / 2W / &c to operate? So would a holder of a “2#” licence with main address in Wales be forced to identify as HB0/2Exxx? That would be ridiculous, but surely that’s what’s implied in the full licence case. It’s just that for ‘E’ read ‘NULL’.
It would be far more logical if the use of the Intermediate E RSL extended to the other licence classes too. Then we could sign HB0/G4TJC and HB0/M0FMF safe in the knowledge that no unwarranted regional affiliation is implied!
Again what’s legal is whatever the local administration says is legal. If Ofcom can’t make the issued call sign unambiguous then it’s not surprising if other administrations have a different interpretation than intended.