Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF9M callsign genealogy
Currently held by DUFFY, DENNIS A
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 KF9M's current licensee, walking backwards.
- MAXEY, GREGORY AILgranted 2013-02-23cancelled 2018-02-21
- N9RQUno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KF9M.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KF9M, oldest first.
- DUFFY, DENNIS A FL2005-12-03 → cancelled 2018-02-01
- MAXEY, GREGORY A IL2018-02-21 active