Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KP4SDT callsign genealogy
Currently held by DEL TORO CARRERO, SERAFINA
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by KP4SDT's current licensee, walking backwards.
- DEL TORO CARRERO, SERAFINAPRgranted 2022-11-23cancelled 2023-07-21
Successor callsigns
Callsigns held now by people who previously held KP4SDT.
No current licensee on record previously held this callsign.