Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4CJS callsign genealogy
Currently held by SANTIAGO, CARLOS J
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 KP4CJS's current licensee, walking backwards.
- SANTIAGO, CARLOS JPRgranted 2018-10-18cancelled 2018-11-09
Successor callsigns
Callsigns held now by people who previously held KP4CJS.
No current licensee on record previously held this callsign.