Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1SC callsign genealogy
Currently held by Clay, William H
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 K1SC's current licensee, walking backwards.
- Clay, William HRIgranted 2010-03-24cancelled 2010-07-02
Successor callsigns
Callsigns held now by people who previously held K1SC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K1SC, oldest first.
- COLE JR, SANFORD H NH1999-11-13 → cancelled 2008-04-06
- Clay, William H RI2020-04-23 active