Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KW9YYZ callsign genealogy
Currently held by Harrington, Sean 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 KW9YYZ's current licensee, walking backwards.
- Harrington, Sean LWIgranted 2021-02-08cancelled 2022-03-05
Successor callsigns
Callsigns held now by people who previously held KW9YYZ.
No current licensee on record previously held this callsign.