Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1STU callsign genealogy
Currently held by BERG, CHRISTOPHER 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 N1STU's current licensee, walking backwards.
- Alpart, Stuart MNJgranted 2008-01-03cancelled 2012-04-27
Successor callsigns
Callsigns held now by people who previously held N1STU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N1STU, oldest first.
- BERG, CHRISTOPHER M VT1994-07-21 → cancelled 2006-07-22
- ALPART, STUART M SC2022-02-03 active