Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0TJO callsign genealogy
Currently held by Olnhausen, Tiberius 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 W0TJO's current licensee, walking backwards.
- Olnhausen, Tiberius JCOgranted 2017-04-17cancelled 2017-05-05
Successor callsigns
Callsigns held now by people who previously held W0TJO.
No current licensee on record previously held this callsign.