Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WD3O callsign genealogy
Currently held by CARLSON, PAUL 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 WD3O's current licensee, walking backwards.
- Thomas, David AVAgranted 2005-06-28cancelled 2013-02-09
Successor callsigns
Callsigns held now by people who previously held WD3O.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WD3O, oldest first.
- CARLSON, PAUL J PA2000-07-21 → cancelled 2012-08-15
- Thomas, David A VA2022-12-22 active