Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB0TG callsign genealogy
Currently held by Davis, Dale S
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 AB0TG's current licensee, walking backwards.
- GIEROK, THOMAS AMNgranted 2013-12-12cancelled 2014-05-16
Successor callsigns
Callsigns held now by people who previously held AB0TG.
All historical holders
Every license row we've seen with the callsign AB0TG, oldest first.
- Davis, Dale S MN2001-12-26 → cancelled 2002-05-31
- GIEROK, THOMAS A MN2014-05-16 → cancelled 2017-04-21