Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KO7T callsign genealogy
Currently held by Rollison, William J
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 KO7T's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KO7T.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KO7T, oldest first.
- French, L E Gene CA2012-05-16 → cancelled 2024-08-06
- Rollison, William J WA2024-08-23 active