Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF4FFJ callsign genealogy
Currently held by ARNOLD SR, DONALD G
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 KF4FFJ's current licensee, walking backwards.
- JACKSON, FRANK FNCgranted 2018-05-21cancelled 2023-06-06
Successor callsigns
Callsigns held now by people who previously held KF4FFJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KF4FFJ, oldest first.
- ARNOLD SR, DONALD G NC1995-12-02 → cancelled 2007-12-04
- JACKSON, FRANK F NC2023-06-06 active