Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N6GSG callsign genealogy
Currently held by LAMBERT, JOHN 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 N6GSG's current licensee, walking backwards.
- Grabowski, Greg SCAgranted 2012-07-30cancelled 2013-08-06
Successor callsigns
Callsigns held now by people who previously held N6GSG.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N6GSG, oldest first.
- LAMBERT, JOHN M CA1995-02-16 → cancelled 2007-02-17
- Grabowski, Greg S CA2013-08-06 → cancelled 2025-08-07