Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4SMC callsign genealogy
Currently held by Rosen, Christopher C
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 N4SMC's current licensee, walking backwards.
- Rosen, Christopher CFLgranted 2016-01-27cancelled 2016-03-01
Successor callsigns
Callsigns held now by people who previously held N4SMC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4SMC, oldest first.
- CANNON, ROBERT J FL1997-12-16 → cancelled 2009-12-17
- Rosen, Christopher C FL2016-03-01 active