Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD4MS callsign genealogy
Currently held by SCHMIDT, ERNEST H
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 AD4MS's current licensee, walking backwards.
- Adams, JeanFLgranted 2017-10-17cancelled 2018-03-06
Successor callsigns
Callsigns held now by people who previously held AD4MS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AD4MS, oldest first.
- SCHMIDT, ERNEST H FL1993-11-02 → cancelled 2005-11-03
- Adams, Jean FL2018-03-06 active