Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K2MMJ callsign genealogy
Currently held by Johnson, Mark 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 K2MMJ's current licensee, walking backwards.
- Johnson, Mark MNEgranted 2017-09-13cancelled 2017-11-17
Successor callsigns
Callsigns held now by people who previously held K2MMJ.
No current licensee on record previously held this callsign.