Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1DMG callsign genealogy
Currently held by Grant, David M
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 W1DMG's current licensee, walking backwards.
- Grant, David MCTgranted 2018-09-12cancelled 2018-12-27
Successor callsigns
Callsigns held now by people who previously held W1DMG.
- GARRETSON, DOUGLAS MOKgranted 2006-03-03cancelled 2018-03-06
All historical holders
Every license row we've seen with the callsign W1DMG, oldest first.
- GARRETSON, DOUGLAS M OK1998-12-30 → cancelled 2006-03-03
- Grant, David M NC2018-12-27 active