Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD0WW callsign genealogy
Currently held by Winters, William W
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 KD0WW's current licensee, walking backwards.
- Winters, William WCOgranted 2008-04-24cancelled 2014-08-12
Successor callsigns
Callsigns held now by people who previously held KD0WW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD0WW, oldest first.
- TURNBULL, JOHN A IL1997-04-09 → cancelled 2009-04-10
- Winters, William W CO2024-07-13 active