/W1

[KD3Y]

Hello fellas,

I worked a station this evening in Massachusetts and he appended /W1 to his call sign.  What does that mean?  I see his QRZ profile shows him in Portugal (CU5AL) so I'm guessing that means he's a licensed Portugese ham that's using his Portugese ham license in USA in some reciprocal agreement?  I googled "/W1" but just got a lot of irrelevant stuff and a gazillion ham call signs containing "W1".

Thanks,
KD3Y

[K3MRI]

Maybe someone else can weigh in. The /W is a first for me. People usually use a '/' followed by a letter to indicate where they are transmitting from. “/P” for portable or on foot, “/M” for mobile, and sometimes “/MM” for maritime mobile and “/AM” for air mobile if transmitting from an aircraft. A W after the slash, like I said, is new to me. 😟

[KD3Y]

I finally found it on some obscure website.  It means he has a portugese license but is operating from the US as a visitor under treaty.

Edited December 3, 2022 by KD3Y