Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4MFJ callsign genealogy
Currently held by JOHNSON, MARCUS F
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 N4MFJ's current licensee, walking backwards.
- JOHNSON, MARCUS FNCgranted 2008-01-14cancelled 2008-03-15
Successor callsigns
Callsigns held now by people who previously held N4MFJ.
No current licensee on record previously held this callsign.