Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7THO callsign genealogy
Currently held by Thornton, Donald R
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 W7THO's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W7THO.
No current licensee on record previously held this callsign.