Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4MCA callsign genealogy
Currently held by Thomas, Justin
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 K4MCA's current licensee, walking backwards.
- Thomas, JustinTNgranted 2022-08-17cancelled 2022-10-07
Successor callsigns
Callsigns held now by people who previously held K4MCA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4MCA, oldest first.
- Montgomery County Auxiliary Radio Service TN2009-09-01 → cancelled 2021-09-02
- Thomas, Justin AL2022-10-07 active