Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NA1M callsign genealogy
Currently held by Hettinger Sr, 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 NA1M's current licensee, walking backwards.
- Ishii, YasuoMPgranted 2014-03-06cancelled 2014-06-03
Successor callsigns
Callsigns held now by people who previously held NA1M.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NA1M, oldest first.
- Hettinger Sr, Mathias CT2005-07-15 → cancelled 2012-05-13
- Ishii, Yasuo MP2024-03-06 active