Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9FMI callsign genealogy
Currently held by Dvorak, Carl 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 W9FMI's current licensee, walking backwards.
- Dvorak, Carl DWIgranted 2014-12-16cancelled 2015-01-06
Successor callsigns
Callsigns held now by people who previously held W9FMI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9FMI, oldest first.
- DVORAK, CARL D WI1999-04-28 → cancelled 2011-04-29
- Dvorak, Carl D WI2024-10-26 active