Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WX9O callsign genealogy
Currently held by RIGGS, ROBERT C
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 WX9O's current licensee, walking backwards.
- RIGGS, ROBERT CILgranted 2012-06-12cancelled 2012-10-12
Successor callsigns
Callsigns held now by people who previously held WX9O.
- SOUHRADA, JOSEPH AFLgranted 1996-12-18cancelled 2000-06-20
All historical holders
Every license row we've seen with the callsign WX9O, oldest first.
- SOUHRADA SR, JOSEPH A FL2000-06-20 → cancelled 2012-06-21
- RIGGS, ROBERT C WA2022-10-04 active