Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4S callsign genealogy
Currently held by ARROYO RODRIQUEZ, JUAN
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 KP4S's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KP4S.
No current licensee on record previously held this callsign.