Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1DMX callsign genealogy
Currently held by Martin, Douglas T
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 W1DMX's current licensee, walking backwards.
- PYRCH, MICHAEL JCTgranted 2004-12-21cancelled 2014-04-08
Successor callsigns
Callsigns held now by people who previously held W1DMX.
- Martin, Douglas TNHgranted 2016-09-07
All historical holders
Every license row we've seen with the callsign W1DMX, oldest first.
- Martin, Douglas T NH2006-04-15 → cancelled 2006-11-07
- PYRCH, MICHAEL J CT2014-04-08 → cancelled 2026-04-09