Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4FOC callsign genealogy
Currently held by JABLONSKI, HENRY 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 K4FOC's current licensee, walking backwards.
- KR4KAGcancelledCAROLINAS-VIRGINIA FOC AMATEUR RADIO CLUBSCgranted 2026-02-24cancelled 2026-03-14
Successor callsigns
Callsigns held now by people who previously held K4FOC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4FOC, oldest first.
- JABLONSKI, HENRY M FL2010-01-26 → cancelled 2022-04-12
- CAROLINAS-VIRGINIA FOC AMATEUR RADIO CLUB SC2026-03-14 active