Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9OYZ callsign genealogy
Currently held by SHEEHAN, JASPER J
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 W9OYZ's current licensee, walking backwards.
- SHEEHAN, JASPER JMEgranted 2022-05-04cancelled 2022-05-24
Successor callsigns
Callsigns held now by people who previously held W9OYZ.
No current licensee on record previously held this callsign.