Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KA4OQU callsign genealogy
Currently held by Mier, Wayne D
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 KA4OQU's current licensee, walking backwards.
- Mier, Wayne DFLgranted 2009-08-11cancelled 2018-07-03
Successor callsigns
Callsigns held now by people who previously held KA4OQU.
- Mier, Wayne DFLgranted 2023-06-09
All historical holders
Every license row we've seen with the callsign KA4OQU, oldest first.
- MIER, WAYNE D FL1992-09-15 → cancelled 2004-09-16
- Mier, Wayne D FL2018-07-03 → cancelled 2023-06-09