Efectivamente, mi duda está resuelta. La RLS FAST FIND es sencillamente pequeña, pero es propia del SMSSM.

Aquí está explicado:
FAST FIND complies with tough federal and international standards. It operates on the global COSPAS SARSAT 406MHz search and rescue satellite communication system, which is supported by international government search and rescue authorities around the world, so a call for help will be acted upon and fast. The FAST FIND is subscription free and does not rely on commercial call centres.
En negrita dice: PERTENECE AL SMSSM y NO HAY SUSCRIPCIÓN, NO DEPENDE DE CENTROS COMERCIALES.
Amén.
