Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9BLP callsign genealogy
Currently held by POLZIN, BRIAN S
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 W9BLP's current licensee, walking backwards.
- POLZIN, BRIAN SWIgranted 2016-04-15cancelled 2017-04-18
Successor callsigns
Callsigns held now by people who previously held W9BLP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9BLP, oldest first.
- MATTHEWS, BARTON C IL1997-12-23 → cancelled 2009-12-24
- POLZIN, BRIAN S IA2017-04-18 active