Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WA4OIU callsign genealogy
Currently held by Brown, Joe 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 WA4OIU's current licensee, walking backwards.
- Brown, Joe KALgranted 2012-12-04cancelled 2013-05-02
Successor callsigns
Callsigns held now by people who previously held WA4OIU.
No current licensee on record previously held this callsign.