Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1THO callsign genealogy
Currently held by Thomas, Matthew 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 K1THO's current licensee, walking backwards.
- Thomas, Matthew ATXgranted 2020-12-04cancelled 2020-12-22
Successor callsigns
Callsigns held now by people who previously held K1THO.
No current licensee on record previously held this callsign.