Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1DXD callsign genealogy
Currently held by SIMMS, OTIS E
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 W1DXD's current licensee, walking backwards.
- Pierce Jr, Don LTXgranted 2004-06-07cancelled 2011-03-04
Successor callsigns
Callsigns held now by people who previously held W1DXD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1DXD, oldest first.
- SIMMS, OTIS E MA1995-11-28 → cancelled 2007-11-29
- PIERCE 205, DON L TX2021-02-11 active