Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NG7J callsign genealogy
Currently held by O BRIEN, JOSEPH A
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 NG7J's current licensee, walking backwards.
- Dernbach, Daniel AMTgranted 2015-10-08cancelled 2016-04-19
Successor callsigns
Callsigns held now by people who previously held NG7J.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NG7J, oldest first.
- O BRIEN, JOSEPH A AZ2004-01-02 → cancelled 2016-03-30
- Dernbach, Daniel A MT2026-01-24 active