Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4JSG callsign genealogy
Currently held by LARSON, GORDON 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 W4JSG's current licensee, walking backwards.
- Grimmett, John SGAgranted 2014-10-17cancelled 2014-11-18
Successor callsigns
Callsigns held now by people who previously held W4JSG.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4JSG, oldest first.
- LARSON, GORDON M VA1998-05-06 → cancelled 2010-03-23
- Grimmett, John S GA2014-11-18 active