Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KI4S callsign genealogy
Currently held by Harmon, Jean A
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 KI4S's current licensee, walking backwards.
- Harmon, Jean AFLgranted 2023-11-16cancelled 2024-06-21
Successor callsigns
Callsigns held now by people who previously held KI4S.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KI4S, oldest first.
- SUAREZ, ROBERTO A FL2012-03-21 → cancelled 2024-06-04
- Harmon, Jean A FL2024-06-21 active