Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3IOU callsign genealogy
Currently held by YATES, VAUGHAN K
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 W3IOU's current licensee, walking backwards.
- Merchant, Wilson RDEgranted 2002-10-25cancelled 2008-02-26
Successor callsigns
Callsigns held now by people who previously held W3IOU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3IOU, oldest first.
- YATES, VAUGHAN K PA1988-05-31 → cancelled 2000-06-01
- Merchant, Wilson R FL2018-02-22 active