Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NJ0J callsign genealogy
Currently held by FOSTER, ROBERT 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 NJ0J's current licensee, walking backwards.
- HALLORAN, JOHN GCOgranted 2017-07-12cancelled 2017-10-13
Successor callsigns
Callsigns held now by people who previously held NJ0J.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NJ0J, oldest first.
- FOSTER, ROBERT D TX2005-07-20 → cancelled 2017-09-23
- HALLORAN, JOHN G CO2017-10-13 active