Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KT4XX callsign genealogy
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 KT4XX's current licensee, walking backwards.
- TAYLOR, KEITH DTNgranted 2014-08-14cancelled 2015-02-21
Successor callsigns
Callsigns held now by people who previously held KT4XX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KT4XX, oldest first.
- TAYLOR, KEITH D TN2025-04-24 active
- —— → cancelled 1997-08-01