Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4FD callsign genealogy
Currently held by Puerto Rico Field Day Group
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 KP4FD's current licensee, walking backwards.
- WP4NZMcancelledPuerto Rico Field Day GroupPRgranted 2009-05-12cancelled 2009-06-02
Successor callsigns
Callsigns held now by people who previously held KP4FD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KP4FD, oldest first.
- RODRIGUEZ GUZMAN, EMILIO PR1997-03-13 → cancelled 2009-03-14
- Puerto Rico Field Day Group PR2019-06-19 active