Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0YYZ callsign genealogy
Currently held by Rullestad, Todd A
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 K0YYZ's current licensee, walking backwards.
- Rullestad, Todd AIAgranted 2017-05-03cancelled 2017-06-20
Successor callsigns
Callsigns held now by people who previously held K0YYZ.
No current licensee on record previously held this callsign.