Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB6HAT callsign genealogy
Currently held by OSER, BETTY J
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 KB6HAT's current licensee, walking backwards.
- Vaus, SteveCAgranted 2025-03-15cancelled 2025-04-04
Successor callsigns
Callsigns held now by people who previously held KB6HAT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB6HAT, oldest first.
- OSER, BETTY J CA2004-08-09 → cancelled 2016-10-05
- Vaus, Steve CA2025-04-04 active