Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N9SM callsign genealogy
Currently held by MC WILLIAMS, STEPHEN G
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 N9SM's current licensee, walking backwards.
- Menon, StefanoNYgranted 2011-12-02cancelled 2020-06-09
Successor callsigns
Callsigns held now by people who previously held N9SM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9SM, oldest first.
- MC WILLIAMS, STEPHEN G IN2008-02-21 → cancelled 2020-05-22
- Menon, Stefano TN2020-06-09 active