Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ7RJ callsign genealogy
Currently held by Johnson, Mikael M
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 KJ7RJ's current licensee, walking backwards.
- Johnson, Mikael MWAgranted 2022-01-24cancelled 2022-02-15
Successor callsigns
Callsigns held now by people who previously held KJ7RJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KJ7RJ, oldest first.
- JOHNSON, MIKAEL M WA2004-07-07 → cancelled 2016-07-12
- Johnson, Mikael M WA2022-02-15 active