Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA9KAB callsign genealogy
Currently held by BROWN, FRANK 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 KA9KAB's current licensee, walking backwards.
- Buttry, Kevin AWIgranted 2013-09-30cancelled 2013-11-09
Successor callsigns
Callsigns held now by people who previously held KA9KAB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA9KAB, oldest first.
- BROWN, FRANK J WI1996-02-16 → cancelled 2003-12-23
- Buttry, Kevin A WI2013-11-09 → cancelled 2026-03-07