Confidence: Medium · Source: FCC ULS · As of 2026-09-09
KP4LOS
ActiveSIERRA FRANCO, LUIS O
- Location
- CAGUAS, PR
- Class
- Technician
- Granted
- 2023-05-31
- Expires
- 2033-05-31
- Previous call
- WP4STS
- FRN
- 0029142841
Sign in to watch
Get notified about status changes and vanity availability for this callsign.
Vanity availability
HeldCurrently held
KP4LOS is held by an active license; it isn't a vanity slot right now.
Vanity availability dates are computed from FCC §97.19's hold periods: 2 years from the cancellation date for cancelled or terminated licenses, 4 years from the expiration date for expired licenses (2-year renewal grace + 2-year hold).
Callsign genealogy
Full chain →Previously held by current licensee
- SIERRA FRANCO, LUIS OPRgranted 2023-04-18cancelled 2023-05-31
License history
0 eventsNo recorded events.