Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9MFD callsign genealogy
Currently held by KRUEGER, MICHAEL W
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 K9MFD's current licensee, walking backwards.
- Krueger, Michael WWIgranted 2016-06-17cancelled 2016-07-15
Successor callsigns
Callsigns held now by people who previously held K9MFD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9MFD, oldest first.
- HINDMAN JR, JOHN C IL1995-11-13 → cancelled 2007-11-14
- KRUEGER, MICHAEL W WI2026-05-28 active