Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC0MKJ callsign genealogy
Currently held by JOHNSON, MICHAEL K
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 KC0MKJ's current licensee, walking backwards.
- JOHNSON, MICHAEL KMOgranted 2000-03-22cancelled 2000-04-11
Successor callsigns
Callsigns held now by people who previously held KC0MKJ.
- JOHNSON, MICHAEL KMOgranted 2022-09-17