Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0MDJ callsign genealogy
Currently held by Johns, Mark D
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 K0MDJ's current licensee, walking backwards.
- JOHNS, MARK Dcancelled 1997-09-17
Successor callsigns
Callsigns held now by people who previously held K0MDJ.
- Johns, Mark DMNgranted 2018-03-16