Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NO4A callsign genealogy
Currently held by Wharton, James D
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 NO4A's current licensee, walking backwards.
- Wharton, James DTNgranted 2004-05-28cancelled 2007-03-27
Successor callsigns
Callsigns held now by people who previously held NO4A.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NO4A, oldest first.
- CASTIGLIA JR, THOMAS B FL2002-06-07 → cancelled 2003-07-11
- Wharton, James D NC2017-01-04 active