Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4HEF callsign genealogy
Currently held by Faulhefer, Jason M
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 K4HEF's current licensee, walking backwards.
- FAULHEFER, JASON MSCgranted 2019-11-12cancelled 2022-03-25
Successor callsigns
Callsigns held now by people who previously held K4HEF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4HEF, oldest first.
- LITTLEFIELD, ANNA L FL1995-02-09 → cancelled 2007-02-10
- Faulhefer, Jason M SC2022-03-25 active