Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9BLN callsign genealogy
Currently held by Walsh Jr, John P
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 W9BLN's current licensee, walking backwards.
- Walsh JR, John PILgranted 2021-08-16cancelled 2022-06-11
Successor callsigns
Callsigns held now by people who previously held W9BLN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9BLN, oldest first.
- MADL SR, FRANK J IL1997-01-02 → cancelled 2009-01-03
- Walsh Jr, John P IL2022-06-11 active