Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9KSI 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 K9KSI's current licensee, walking backwards.
- Henderson, Chris AILgranted 2020-02-03cancelled 2021-03-23
Successor callsigns
Callsigns held now by people who previously held K9KSI.
- WHITE, DAVID AWIgranted 2015-12-12cancelled 2016-01-05
All historical holders
Every license row we've seen with the callsign K9KSI, oldest first.
- WHITE, DAVID A WI2015-02-13 → cancelled 2015-12-12
- Henderson, Chris A IL2021-03-23 active