Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5MDS callsign genealogy
Currently held by SMITH, MARK D
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 W5MDS's current licensee, walking backwards.
- Smith, Michael DOKgranted 2011-03-16cancelled 2019-09-06
Successor callsigns
Callsigns held now by people who previously held W5MDS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5MDS, oldest first.
- SMITH, MARK D TX2001-04-10 → cancelled 2013-04-11
- Smith, Michael OK2019-09-06 active