Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1DON callsign genealogy
Currently held by GADSBY, DONALD 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 W1DON's current licensee, walking backwards.
- Gadsby, Donald WMAgranted 2003-01-21cancelled 2005-01-04
Successor callsigns
Callsigns held now by people who previously held W1DON.
- Czarnecki, Donald JMAgranted 2012-09-13cancelled 2024-10-02
All historical holders
Every license row we've seen with the callsign W1DON, oldest first.
- Czarnecki, Donald J MA1998-12-15 → cancelled 2002-10-01
- GADSBY, DONALD W MA2024-12-21 active