Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KJ4CFM callsign genealogy
Currently held by Jones, John C
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 KJ4CFM's current licensee, walking backwards.
- Miles, Colin FTXgranted 2024-02-06cancelled 2024-02-24
Successor callsigns
Callsigns held now by people who previously held KJ4CFM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KJ4CFM, oldest first.
- Jones, John C TN2008-02-22 → cancelled 2020-02-25
- Miles, Colin F TX2024-02-24 active