Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KP4NCS callsign genealogy
Currently held by CRESPO, NELSON
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 KP4NCS's current licensee, walking backwards.
- CRESPO, NELSONcancelled 1999-05-26
Successor callsigns
Callsigns held now by people who previously held KP4NCS.
No current licensee on record previously held this callsign.