Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD9UUU callsign genealogy
Currently held by Von Tobel, Barry J
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 KD9UUU's current licensee, walking backwards.
- von Tobel, Barry JILgranted 2022-05-03cancelled 2024-12-31
Successor callsigns
Callsigns held now by people who previously held KD9UUU.
All historical holders
Every license row we've seen with the callsign KD9UUU, oldest first.
- Von Tobel, Barry J IL2022-04-11 → cancelled 2022-05-03
- von Tobel, Barry J IN2024-12-31 → cancelled 2026-06-09