Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KB7QOJ callsign genealogy
Currently held by WARREN, MICHAEL 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 KB7QOJ's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KB7QOJ.
- WARREN, MICHAEL JIDgranted 2018-09-07