Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4OEC callsign genealogy
Currently held by Caesar, Michael B
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 K4OEC's current licensee, walking backwards.
- Caeser, Michael BFLgranted 2019-09-23cancelled 2019-10-12
Successor callsigns
Callsigns held now by people who previously held K4OEC.
All historical holders
Every license row we've seen with the callsign K4OEC, oldest first.
- JOHNSON, JOHN W TN2011-12-31 → cancelled 2015-02-24
- Caesar, Michael B FL2019-10-12 → cancelled 2022-04-26