Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KP4NAO callsign genealogy
Currently held by ALVAREZ CORDERO, ANTONIO
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 KP4NAO's current licensee, walking backwards.
- ALVAREZ CORDERO, ANTONIOcancelled 1999-02-10
Successor callsigns
Callsigns held now by people who previously held KP4NAO.
- ALVAREZ CORDERO, ANTONIOPRgranted 2022-10-14