Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AG4DB callsign genealogy
Currently held by Tomasek, Jim 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 AG4DB's current licensee, walking backwards.
- BARTHOLOMEW, DANIEL ENCgranted 2008-04-01cancelled 2016-04-01
Successor callsigns
Callsigns held now by people who previously held AG4DB.
- Tomasek, Jim FILgranted 2010-09-04cancelled 2022-11-04
All historical holders
Every license row we've seen with the callsign AG4DB, oldest first.
- Tomasek, Jim F TN1993-10-12 → cancelled 2000-11-03
- Bartholomew, Daniel NC2026-04-28 active