Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KK1MAC callsign genealogy
Currently held by CASILLAS, MATTHEW 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 KK1MAC's current licensee, walking backwards.
- CASILLAS, MATTHEW AAZgranted 2018-04-09cancelled 2018-05-04
Successor callsigns
Callsigns held now by people who previously held KK1MAC.
No current licensee on record previously held this callsign.