Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KI0SU callsign genealogy
Currently held by Holmgrain, Everett W
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 KI0SU's current licensee, walking backwards.
- Holmgrain, Everett WSDgranted 2016-06-02
Successor callsigns
Callsigns held now by people who previously held KI0SU.
- Holmgrain, Everett WSDgranted 2016-06-02