Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1JSG callsign genealogy
Currently held by Griswold, Jeffrey S
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 K1JSG's current licensee, walking backwards.
- Griswold, Jeffrey SLAgranted 2017-08-08cancelled 2017-10-14
Successor callsigns
Callsigns held now by people who previously held K1JSG.
No current licensee on record previously held this callsign.