Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W0PAX callsign genealogy
Currently held by Brennan, Greg 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 W0PAX's current licensee, walking backwards.
- Brennan, Greg JIAgranted 2024-05-08cancelled 2024-06-04
Successor callsigns
Callsigns held now by people who previously held W0PAX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0PAX, oldest first.
- DAVIS, WILLIAM G CO1989-09-19 → cancelled 2001-09-20
- Brennan, Greg J IA2024-06-04 active