Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5OLO callsign genealogy
Currently held by THWEATT, WILLIAM 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 W5OLO's current licensee, walking backwards.
- Tomko, Paul LOKgranted 2021-03-15cancelled 2022-05-03
Successor callsigns
Callsigns held now by people who previously held W5OLO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5OLO, oldest first.
- THWEATT, WILLIAM E MS2000-11-09 → cancelled 2013-02-06
- Tomko, Paul L OK2022-05-03 active