Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4SFC callsign genealogy
Currently held by COPPALA, LARRY C
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 K4SFC's current licensee, walking backwards.
- Childress, Ronald CVAgranted 2016-11-14cancelled 2016-12-02
Successor callsigns
Callsigns held now by people who previously held K4SFC.
All historical holders
Every license row we've seen with the callsign K4SFC, oldest first.
- COPPALA, LARRY C KY2001-07-07 → cancelled 2010-11-28
- CHILDRESS, RONALD VA2016-12-02 → cancelled 2024-09-07