Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4DA callsign genealogy
Currently held by Rivera Galletti Sr, Luis A
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 KP4DA's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KP4DA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KP4DA, oldest first.
- GALLARDO LLOBET, JUAN F PR1998-05-01 → cancelled 2010-05-04
- Rivera Galletti Sr, Luis A CT2022-03-30 active