Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB0XO callsign genealogy
Currently held by Gessley, William T
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 AB0XO's current licensee, walking backwards.
- Gessley, William TKSgranted 2002-12-26cancelled 2003-02-13
Successor callsigns
Callsigns held now by people who previously held AB0XO.
- Gessley, William TKSgranted 2013-03-12cancelled 2025-03-12