Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4FUP callsign genealogy
Currently held by CURTIS, BURTON P
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 N4FUP's current licensee, walking backwards.
- GEHRING, JOHN SVAgranted 2014-11-12cancelled 2014-12-02
Successor callsigns
Callsigns held now by people who previously held N4FUP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4FUP, oldest first.
- CURTIS, BURTON P FL1996-01-24 → cancelled 2008-01-25
- GEHRING, JOHN S VA2014-12-02 active