Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WZ4DAY callsign genealogy
Currently held by Yarbrough, Dennis A
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 WZ4DAY's current licensee, walking backwards.
- Day, Jerry RKYgranted 2007-08-24cancelled 2011-03-26
Successor callsigns
Callsigns held now by people who previously held WZ4DAY.
- YARBROUGH, DENNIS AFLgranted 2011-03-26cancelled 2023-07-12
All historical holders
Every license row we've seen with the callsign WZ4DAY, oldest first.
- Yarbrough, Dennis A FL2001-05-25 → cancelled 2001-06-12
- Day, Jerry R KY2020-12-30 active