Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4ARP callsign genealogy
Currently held by Ruiz Perez, Alfredo
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 KP4ARP's current licensee, walking backwards.
- Ruiz Perez, AlfredoPRgranted 2009-04-30cancelled 2015-08-04
Successor callsigns
Callsigns held now by people who previously held KP4ARP.
No current licensee on record previously held this callsign.