Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WO4X callsign genealogy
Currently held by Smith, Claiborne 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 WO4X's current licensee, walking backwards.
- Ritterbusch, James FVAgranted 2013-08-21cancelled 2019-11-08
- N1QNKno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held WO4X.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WO4X, oldest first.
- Smith, Claiborne P GA2008-02-05 → cancelled 2017-10-20
- Ritterbusch, James F VA2019-11-08 active