Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1ACX callsign genealogy
Currently held by McCarthy, Matthew J
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 K1ACX's current licensee, walking backwards.
- McCarthy, Matthew JNHgranted 2020-12-29cancelled 2021-01-26
Successor callsigns
Callsigns held now by people who previously held K1ACX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K1ACX, oldest first.
- TETRAULT, GERALD R FL2007-09-27 → cancelled 2019-09-28
- McCarthy, Matthew J NH2021-01-26 active