Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WU3O callsign genealogy
Currently held by PRIM, ERNEST R
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 WU3O's current licensee, walking backwards.
- PRIM, ERNEST RTNgranted 2013-03-15cancelled 2013-07-06
Successor callsigns
Callsigns held now by people who previously held WU3O.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WU3O, oldest first.
- BREEDLOVE, THOMAS L MD1992-01-07 → cancelled 2004-01-08
- PRIM, ERNEST R TX2023-07-04 active