Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KI7JOZ callsign genealogy
Currently held by Mumma, Justin 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 KI7JOZ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KI7JOZ.
No current licensee on record previously held this callsign.