Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AA7BU callsign genealogy
Currently held by BAUER, WILLIAM H
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 AA7BU's current licensee, walking backwards.
- Uhl, William WIDgranted 2011-12-23cancelled 2019-11-05
Successor callsigns
Callsigns held now by people who previously held AA7BU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AA7BU, oldest first.
- BAUER, WILLIAM H WA1989-09-26 → cancelled 2001-09-27
- Uhl, William W ID2019-11-05 active