Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC5UP callsign genealogy
Currently held by DERKS, NELSON S
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 AC5UP's current licensee, walking backwards.
- DERKS, NELSON SOKgranted 1996-05-29cancelled 2000-05-03
Successor callsigns
Callsigns held now by people who previously held AC5UP.
No current licensee on record previously held this callsign.