Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4ES callsign genealogy
Currently held by Esslinger, Mark 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 K4ES's current licensee, walking backwards.
- Esslinger, Mark ATXgranted 2024-03-06cancelled 2024-03-29
Successor callsigns
Callsigns held now by people who previously held K4ES.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4ES, oldest first.
- Bregar, Joseph C FL2004-02-13 → cancelled 2010-02-19
- MC GEHEE, DONALD B FL2012-03-10 → cancelled 2024-03-12
- Esslinger, Mark A TX2024-03-29 active