Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3KDO callsign genealogy
Currently held by Stout, William 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 W3KDO's current licensee, walking backwards.
- Stout, William RFLgranted 2023-05-24cancelled 2023-08-11
Successor callsigns
Callsigns held now by people who previously held W3KDO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3KDO, oldest first.
- CARL, HARRY A PA1997-11-13 → cancelled 2009-11-14
- Stout, William R FL2023-08-11 active