Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WB9CZT callsign genealogy
Currently held by OAKLEY, WILLIAM D
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 WB9CZT's current licensee, walking backwards.
- GIBSON, PAUL AMOgranted 2013-08-20cancelled 2013-12-31
Successor callsigns
Callsigns held now by people who previously held WB9CZT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WB9CZT, oldest first.
- OAKLEY, WILLIAM D IL1997-06-10 → cancelled 2008-03-29
- Gibson, Paul A MO2025-09-17 active