Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1OBW callsign genealogy
Currently held by Warren Jr, William O
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 W1OBW's current licensee, walking backwards.
- Warren Jr, William OCTgranted 2021-10-18cancelled 2021-11-09
Successor callsigns
Callsigns held now by people who previously held W1OBW.
No current licensee on record previously held this callsign.