Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4IZS callsign genealogy
Currently held by Spokas, Isidore
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 K4IZS's current licensee, walking backwards.
- Spokas, IsidoreGAgranted 2013-03-09cancelled 2017-02-14
Successor callsigns
Callsigns held now by people who previously held K4IZS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4IZS, oldest first.
- BELL, CECIL A FL1994-10-21 → cancelled 2006-10-24
- Spokas, Isidore GA2017-02-14 active