Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4SGW callsign genealogy
Currently held by TOOLE, JERRY L
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 N4SGW's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held N4SGW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4SGW, oldest first.
- TOOLE, JERRY L AL1988-03-08 → cancelled 2000-03-09
- Williams, Stephen G CO2018-03-13 active