Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1CSG callsign genealogy
Currently held by D Entremont, Addison E
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 N1CSG's current licensee, walking backwards.
- D Entremont, Addison ENHgranted 2001-11-20cancelled 2009-01-24
Successor callsigns
Callsigns held now by people who previously held N1CSG.
- D Entremont, Addison EMAgranted 2018-11-19
All historical holders
Every license row we've seen with the callsign N1CSG, oldest first.
- HAMMOND, RICHARD C MA1996-12-02 → cancelled 2008-12-03
- D Entremont, Addison E NH2009-01-24 → cancelled 2011-04-14