Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD7TR callsign genealogy
Currently held by Giese, Donald A
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 AD7TR's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held AD7TR.
- Giese, Donald AUTgranted 2020-02-19cancelled 2022-08-02
All historical holders
Every license row we've seen with the callsign AD7TR, oldest first.
- Giese, Donald A UT2006-08-19 → cancelled 2010-04-02
- Giese, Donald A UT2022-08-02 active