Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1TSN callsign genealogy
Currently held by Shaw, William J
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 K1TSN's current licensee, walking backwards.
- Shaw, William JALgranted 2014-03-03cancelled 2014-05-20
Successor callsigns
Callsigns held now by people who previously held K1TSN.
No current licensee on record previously held this callsign.