Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WU4Y callsign genealogy
Currently held by BLUE SKY Amateur Radio Club
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 WU4Y's current licensee, walking backwards.
- Wirth, Greg JALgranted 2017-05-08cancelled 2017-07-25
Successor callsigns
Callsigns held now by people who previously held WU4Y.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WU4Y, oldest first.
- CAMPER, WALTER R AL1998-04-08 → cancelled 2003-06-15
- BLUE SKY Amateur Radio Club GA2005-07-06 → cancelled 2017-07-07
- Wirth, Greg J AL2017-07-25 active