Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4GSR callsign genealogy
Currently held by Gilbert, Sean R
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 N4GSR's current licensee, walking backwards.
- Gilbert, Sean RFLgranted 2018-03-06cancelled 2019-07-26
Successor callsigns
Callsigns held now by people who previously held N4GSR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4GSR, oldest first.
- COOKE, WALTER PA1987-10-06 → cancelled 1999-10-07
- Gilbert, Sean R FL2019-07-26 active