Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4WNK callsign genealogy
Currently held by HAYES, MIKE H
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 N4WNK's current licensee, walking backwards.
- Sapielak, William LNCgranted 2020-11-13cancelled 2024-03-09
Successor callsigns
Callsigns held now by people who previously held N4WNK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4WNK, oldest first.
- HAYES, MIKE H AL1999-04-12 → cancelled 2011-04-13
- Sapielak, William L NC2024-03-09 active