Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3MAC callsign genealogy
Currently held by DAYAO, MARK 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 K3MAC's current licensee, walking backwards.
- Dayao, Mark AFLgranted 2020-06-01cancelled 2021-03-02
Successor callsigns
Callsigns held now by people who previously held K3MAC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K3MAC, oldest first.
- MAC PEEK, CHARLES E FL2008-11-18 → cancelled 2021-02-11
- DAYAO, MARK A FL2021-03-02 active