Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KT0XX callsign genealogy
Currently held by ROY, WILLIAM S
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 KT0XX's current licensee, walking backwards.
- ROY, WILLIAM SCOgranted 2002-12-12cancelled 2009-06-26
- N1KJHno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KT0XX.
- ROY, WILLIAM SMAgranted 2019-12-03