Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA0NBW callsign genealogy
Currently held by DORR JR, FRANK L
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 KA0NBW's current licensee, walking backwards.
- Dorr, Brett TNCgranted 2011-12-13cancelled 2011-12-31
Successor callsigns
Callsigns held now by people who previously held KA0NBW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA0NBW, oldest first.
- DORR JR, FRANK L MO1994-10-26 → cancelled 2006-10-27
- Dorr, Brett T CO2023-02-14 active