Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KI7SO callsign genealogy
Currently held by MILLS, CLARENCE A
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 KI7SO's current licensee, walking backwards.
- N7XRTno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KI7SO.
- MILLS, CLARENCE AORgranted 2026-03-24