Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF4JDF callsign genealogy
Currently held by Fleet, John 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 KF4JDF's current licensee, walking backwards.
- Fleet, John DGAgranted 2022-09-20cancelled 2022-10-08
Successor callsigns
Callsigns held now by people who previously held KF4JDF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KF4JDF, oldest first.
- Robison, Norma B NC2006-02-09 → cancelled 2018-05-01
- Fleet, John D GA2022-10-08 active