Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4TOC callsign genealogy
Currently held by TOCHOLKE, BRIAN E
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 K4TOC's current licensee, walking backwards.
- Tucker, Michael AALgranted 2022-02-07cancelled 2022-04-22
Successor callsigns
Callsigns held now by people who previously held K4TOC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4TOC, oldest first.
- TOCHOLKE, BRIAN E TN2009-06-23 → cancelled 2021-06-24
- Tucker, Michael A AL2022-04-22 active