Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KI0SD callsign genealogy
Currently held by Easterday, Thomas L
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 KI0SD's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KI0SD.
No current licensee on record previously held this callsign.