Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KI0SDW callsign genealogy
Currently held by Westerlund, Samuel D
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 KI0SDW's current licensee, walking backwards.
- Westerlund, SamuelMNgranted 2020-12-18cancelled 2021-02-13
Successor callsigns
Callsigns held now by people who previously held KI0SDW.
No current licensee on record previously held this callsign.