Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KQ4JMJ callsign genealogy
Currently held by Butler, Jeffrey 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 KQ4JMJ'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 KQ4JMJ.
- Butler, Jeffrey AALgranted 2023-09-26