Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9MDS callsign genealogy
Currently held by Sanding, Michael 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 W9MDS's current licensee, walking backwards.
- Smith, Michael DAZgranted 2025-06-11cancelled 2025-08-23
Successor callsigns
Callsigns held now by people who previously held W9MDS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9MDS, oldest first.
- Sanding, Michael D WI2011-07-08 → cancelled 2023-07-12
- Smith, Michael D AZ2025-08-23 active