Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WO0BYU callsign genealogy
Currently held by Chamberlin, Charles 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 WO0BYU's current licensee, walking backwards.
- Chamberlin, Charles ENEgranted 2024-12-19cancelled 2025-01-11
Successor callsigns
Callsigns held now by people who previously held WO0BYU.
No current licensee on record previously held this callsign.