Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WY4O callsign genealogy
Currently held by MUNDY, JAMES 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 WY4O's current licensee, walking backwards.
- MUNDY, JAMES JVAgranted 2014-01-08cancelled 2018-02-23
Successor callsigns
Callsigns held now by people who previously held WY4O.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WY4O, oldest first.
- JAMES, JERRY W FL2006-09-27 → cancelled 2016-02-03
- MUNDY, JAMES J VA2018-02-23 active