Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W6TEO callsign genealogy
Currently held by PROTICH, WILLIAM R
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 W6TEO's current licensee, walking backwards.
- OLSON, TIMOTHY ECAgranted 2009-01-30cancelled 2013-09-24
Successor callsigns
Callsigns held now by people who previously held W6TEO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6TEO, oldest first.
- PROTICH, WILLIAM R CA1998-06-09 → cancelled 2010-06-10
- OLSON, TIMOTHY E CA2023-08-01 active