Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WU5K callsign genealogy
Currently held by YAHOOS CONTEST 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 WU5K's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WU5K.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WU5K, oldest first.
- Stouffer, Richard D TX2007-06-22 → cancelled 2017-06-21
- YAHOOS CONTEST CLUB TX2019-08-27 active
- —— → cancelled 1998-10-20