Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KI7J callsign genealogy
Currently held by THOMBS, FREDERICK 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 KI7J's current licensee, walking backwards.
- Sperduti, Armand CAZgranted 2006-05-31cancelled 2007-12-18
Successor callsigns
Callsigns held now by people who previously held KI7J.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KI7J, oldest first.
- THOMBS, FREDERICK L OR1995-11-28 → cancelled 2007-11-29
- Sperduti, Armand C AZ2017-11-06 active