Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4KRG callsign genealogy
Currently held by DuBois, John 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 N4KRG's current licensee, walking backwards.
- DuBois, John MUTgranted 2008-01-17cancelled 2017-01-14
Successor callsigns
Callsigns held now by people who previously held N4KRG.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4KRG, oldest first.
- DU BOIS, JOHN M UT1994-10-25 → cancelled 2006-08-23
- DuBois, John M UT2017-01-14 active