Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC1MCX callsign genealogy
Currently held by Pasternak, Tate M
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 KC1MCX's current licensee, walking backwards.
- Pasternak, Tate MMAgranted 2024-06-13cancelled 2024-10-29
Successor callsigns
Callsigns held now by people who previously held KC1MCX.
- Horvitz, MatthewMAgranted 2019-11-30
All historical holders
Every license row we've seen with the callsign KC1MCX, oldest first.
- Horvitz, Matthew MA2019-11-07 → cancelled 2019-11-30
- Pasternak, Tate M MA2024-10-29 active