Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KS4O callsign genealogy
Currently held by WHITEHURST, JOSEPH M
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 KS4O's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KS4O.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KS4O, oldest first.
- WHITEHURST, JOSEPH M NC1994-10-19 → cancelled 2006-10-20
- Wright, James C NC2016-10-31 active