Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N0MSA callsign genealogy
Currently held by ANDERSON, MATTHEW S
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 N0MSA's current licensee, walking backwards.
- Anderson, Matthew SMOgranted 2007-12-10cancelled 2008-04-25
Successor callsigns
Callsigns held now by people who previously held N0MSA.
- EINBERGER, JOHN WCOgranted 2023-03-22
All historical holders
Every license row we've seen with the callsign N0MSA, oldest first.
- EINBERGER, JOHN W CO2002-06-15 → cancelled 2003-06-17
- ANDERSON, MATTHEW S KS2018-03-06 active