Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9BJP callsign genealogy
Currently held by NOSBAUM, JOHN E
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 W9BJP's current licensee, walking backwards.
- PETERSON, BURT JWIgranted 2003-01-15cancelled 2007-06-09
Successor callsigns
Callsigns held now by people who previously held W9BJP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9BJP, oldest first.
- NOSBAUM, JOHN E IL1991-08-20 → cancelled 2003-08-21
- PETERSON, BURT J WI2017-04-11 active