Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NG1A callsign genealogy
Currently held by BUTTS, FREDERICK J
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 NG1A's current licensee, walking backwards.
- Curtin, Carl LMAgranted 2016-04-05cancelled 2018-05-04
Successor callsigns
Callsigns held now by people who previously held NG1A.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NG1A, oldest first.
- BUTTS, FREDERICK J MA2006-03-16 → cancelled 2018-04-17
- Curtin, Carl L MA2018-05-04 active