Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4CSO callsign genealogy
Currently held by SO, CAMILO 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 W4CSO's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W4CSO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4CSO, oldest first.
- SO, CAMILO D FL2012-11-10 → cancelled 2024-12-14
- OLDFIELD, CLIVE S SC2026-09-04 active