Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4GEB callsign genealogy
Currently held by Mazarky, Michael 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 K4GEB's current licensee, walking backwards.
- Mazarky, Michael AGAgranted 2021-08-19cancelled 2021-09-08
Successor callsigns
Callsigns held now by people who previously held K4GEB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4GEB, oldest first.
- BOLIN, GEORGE E FL2006-08-30 → cancelled 2018-11-27
- Mazarky, Michael A GA2021-09-08 active