Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9MJJ callsign genealogy
Currently held by Johnston, 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 W9MJJ's current licensee, walking backwards.
- Johnston, Michael JWIgranted 2012-05-22cancelled 2020-11-24
Successor callsigns
Callsigns held now by people who previously held W9MJJ.
No current licensee on record previously held this callsign.