Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N6SGM callsign genealogy
Currently held by VARGAS, JOHN I
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 N6SGM's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held N6SGM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N6SGM, oldest first.
- GLAZE, WARREN N OR1998-09-02 → cancelled 2010-09-03
- VARGAS, JOHN I CA2014-12-30 active