Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4GRL callsign genealogy
Currently held by BARNARD JR, ROBERT S
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 N4GRL's current licensee, walking backwards.
- Amberg, AmandaFLgranted 2020-12-02cancelled 2020-12-22
Successor callsigns
Callsigns held now by people who previously held N4GRL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4GRL, oldest first.
- BARNARD JR, ROBERT S CO1989-03-21 → cancelled 2001-03-22
- Amberg, Amanda FL2020-12-22 active