Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AK4TX callsign genealogy
Currently held by Warren, Kevin M
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 AK4TX's current licensee, walking backwards.
- Umsted, ChristinTXgranted 2024-03-12cancelled 2024-07-06
Successor callsigns
Callsigns held now by people who previously held AK4TX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AK4TX, oldest first.
- Warren, Kevin M TN2012-04-27 → cancelled 2024-04-30
- Umsted, Christin TX2024-07-06 active