Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4LFC callsign genealogy
Currently held by HARP, WILLIAM R
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 K4LFC's current licensee, walking backwards.
- CABEZAS, LEANDRONCgranted 2019-01-03cancelled 2019-03-05
Successor callsigns
Callsigns held now by people who previously held K4LFC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4LFC, oldest first.
- HARP, WILLIAM R GA2005-03-28 → cancelled 2016-07-15
- CABEZAS, LEANDRO NC2019-03-05 active