Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4ISY callsign genealogy
Currently held by TORRES, 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 KP4ISY's current licensee, walking backwards.
- TORRES, LUIS Acancelled 1999-03-11
Successor callsigns
Callsigns held now by people who previously held KP4ISY.
No current licensee on record previously held this callsign.