Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4JSA callsign genealogy
Currently held by Soto Arocho, Javier
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 KP4JSA's current licensee, walking backwards.
- Soto Arocho, JavierPRgranted 2016-07-13cancelled 2016-09-27
Successor callsigns
Callsigns held now by people who previously held KP4JSA.
No current licensee on record previously held this callsign.