Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD4FHW callsign genealogy
Currently held by DAVIS, LEON
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 KD4FHW's current licensee, walking backwards.
- FREI, JAMES ETNgranted 2011-10-28cancelled 2021-07-07
Successor callsigns
Callsigns held now by people who previously held KD4FHW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD4FHW, oldest first.
- DAVIS, LEON NC1991-10-01 → cancelled 2003-10-02
- FREI, JAMES E TN2021-07-07 active