Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KS9DX callsign genealogy
Currently held by WHITE, DAVID A
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 KS9DX's current licensee, walking backwards.
- RAMSTEDT, VIVIAN JILgranted 2017-12-18cancelled 2018-10-13
Successor callsigns
Callsigns held now by people who previously held KS9DX.
- WHITE, DAVID AWIgranted 2025-11-19
All historical holders
Every license row we've seen with the callsign KS9DX, oldest first.
- WHITE, DAVID A WI2016-01-05 → cancelled 2016-01-23
- RAMSTEDT, VIVIAN J IL2018-10-13 active