Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD4DMY callsign genealogy
Currently held by DUGAN, WILLIAM S
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 KD4DMY's current licensee, walking backwards.
- Young, Damon MALgranted 2009-01-27cancelled 2009-03-07
Successor callsigns
Callsigns held now by people who previously held KD4DMY.
- DUGAN, WILLIAM SVAgranted 2014-01-15cancelled 2026-03-14
All historical holders
Every license row we've seen with the callsign KD4DMY, oldest first.
- DUGAN, WILLIAM S VA2003-06-24 → cancelled 2004-03-13
- Young Mr., Damon M AL2009-03-07 → cancelled 2021-03-09