Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9YZ callsign genealogy
Currently held by WILLIAMS, RONALD C
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 W9YZ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W9YZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9YZ, oldest first.
- WILLIAMS, RONALD C IN2007-01-05 → cancelled 2015-12-01
- COWELL, JEFFREY G LA2017-12-22 active