Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N0OBZ callsign genealogy
Currently held by WALKER, JOHN W
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 N0OBZ's current licensee, walking backwards.
- DEMPSEY, ALICIA MWAgranted 2012-11-13cancelled 2012-12-07
Successor callsigns
Callsigns held now by people who previously held N0OBZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N0OBZ, oldest first.
- WALKER, JOHN W MN1991-05-28 → cancelled 2003-05-29
- Lavin, Alicia M WA2022-11-26 active