Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7DFS callsign genealogy
Currently held by Schroeder, Dallas F
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 W7DFS's current licensee, walking backwards.
- Schroeder, Dallas FTXgranted 2015-07-07cancelled 2021-11-19
Successor callsigns
Callsigns held now by people who previously held W7DFS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7DFS, oldest first.
- MOTTAZ, DONALD E WA2007-03-19 → cancelled 2019-04-17
- Schroeder, Dallas F TX2021-11-19 active