Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB6O callsign genealogy
Currently held by ARRINGTON JR, BARTHOLOMER
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 WB6O's current licensee, walking backwards.
- Mastandrea, Christopher ACAgranted 2026-02-12cancelled 2026-06-30
Successor callsigns
Callsigns held now by people who previously held WB6O.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WB6O, oldest first.
- ARRINGTON JR, BARTHOLOMER CA2014-02-12 → cancelled 2026-05-12
- Mastandrea, Christopher A CA2026-06-30 active