Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA0OPW callsign genealogy
Currently held by BRENNAN, JOHN 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 WA0OPW's current licensee, walking backwards.
- BRENNAN, JOHN JNEgranted 2019-02-12cancelled 2021-12-28
Successor callsigns
Callsigns held now by people who previously held WA0OPW.
No current licensee on record previously held this callsign.