Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4RU callsign genealogy
Currently held by Sandy Donahue Memorial 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 W4RU's current licensee, walking backwards.
- KJ4NOXcancelledSandy Donahue Memorial Radio ClubALgranted 2009-07-16cancelled 2009-09-09
Successor callsigns
Callsigns held now by people who previously held W4RU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4RU, oldest first.
- Donahue, Nelson E AL2006-10-05 → cancelled 2009-05-04
- Sandy Donahue Memorial Radio Club FL2019-07-23 active