Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB0TN callsign genealogy
Currently held by Tavares, John F
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 AB0TN's current licensee, walking backwards.
- Tavares, John FCOgranted 1998-03-20cancelled 2002-01-15
Successor callsigns
Callsigns held now by people who previously held AB0TN.
- Tavares, John FORgranted 2017-03-20