Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WO4SUN callsign genealogy
Currently held by Dudda, Wolfgang E
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 WO4SUN's current licensee, walking backwards.
- Dudda, Wolfgang EFLgranted 2011-11-22cancelled 2012-12-01
Successor callsigns
Callsigns held now by people who previously held WO4SUN.
No current licensee on record previously held this callsign.