Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6STB callsign genealogy
Currently held by Butler, Tom
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 K6STB's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K6STB.
No current licensee on record previously held this callsign.