Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9BON callsign genealogy
Currently held by BONCZYNSKI JR, EDWARD 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 W9BON's current licensee, walking backwards.
- BONCZYNSKI JR, EDWARD JINgranted 2010-09-14cancelled 2012-11-24
Successor callsigns
Callsigns held now by people who previously held W9BON.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9BON, oldest first.
- BERNSTEIN, MARTIN IL1988-03-29 → cancelled 2000-03-30
- BONCZYNSKI JR, EDWARD J IN2022-11-01 active