Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AA4UU callsign genealogy
Currently held by MATHIS, TIMOTHY R
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 AA4UU's current licensee, walking backwards.
- MATHIS, TIMOTHY RGAgranted 2019-10-25cancelled 2020-03-17
Successor callsigns
Callsigns held now by people who previously held AA4UU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AA4UU, oldest first.
- KEHL, CHARLES FL2006-01-24 → cancelled 2018-04-18
- MATHIS, TIMOTHY R VA2020-03-17 active