Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K2MAC callsign genealogy
Currently held by BIEHL JR, MATHIAS
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 K2MAC's current licensee, walking backwards.
- DOOLITTLE, SCOTT MNYgranted 2007-05-23cancelled 2015-07-31
Successor callsigns
Callsigns held now by people who previously held K2MAC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K2MAC, oldest first.
- BIEHL JR, MATHIAS NY2001-10-04 → cancelled 2013-11-20
- DOOLITTLE, SCOTT M NY2025-05-23 active