Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7BAU callsign genealogy
Currently held by Baumberger, Austin C
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 W7BAU's current licensee, walking backwards.
- Baumberger, Austin CIAgranted 2021-01-27cancelled 2021-02-17
Successor callsigns
Callsigns held now by people who previously held W7BAU.
No current licensee on record previously held this callsign.