Mario A Castillo
Active- Service
- General Mobile Radio Service
- Location
- RIO GRANDE, PR
- FRN
- 0038727582
- Granted
- Aug 4, 2026
- Expires
- Aug 4, 2036
FCC Amateur and GMRS license lookup
Search public FCC ULS records by callsign, FRN, name, or location.
WSNT983
- Callsign
- Try W1AW, or enter several callsigns separated by commas.
- FRN
- Find licenses linked to a 10-digit FCC Registration Number.
- Advanced
- Combine a name, location, service, or license dates.