Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KT4XO callsign genealogy
Currently held by ARBUTHNOT III, GUY L
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 KT4XO's current licensee, walking backwards.
- KC6ASTno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KT4XO.
- Arbuthnot Iii, Guy LFLgranted 1996-11-05cancelled 2000-08-22