Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9MAJ callsign genealogy
Currently held by VONDERSCHMITT, JOHN W
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 K9MAJ's current licensee, walking backwards.
- Vonderschmitt, TimothyWAgranted 2021-08-24cancelled 2023-12-29
Successor callsigns
Callsigns held now by people who previously held K9MAJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9MAJ, oldest first.
- VONDERSCHMITT, JOHN W IN2012-09-24 → cancelled 2021-05-06
- Vonderschmitt, Timothy OH2023-12-29 active