Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AA6MS callsign genealogy
Currently held by SCHNITZER, MARK 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 AA6MS's current licensee, walking backwards.
- SCHNITZER, MARK SCAgranted 1997-03-12cancelled 2003-05-30
Successor callsigns
Callsigns held now by people who previously held AA6MS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AA6MS, oldest first.
- SCHARF, JOHN J CA1990-05-22 → cancelled 2002-05-23
- SCHNITZER, MARK S TX2023-05-02 active