Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KS9OAT callsign genealogy
Currently held by Schlough, Brett M
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 KS9OAT's current licensee, walking backwards.
- Schlough, Brett MWIgranted 2021-07-27cancelled 2021-08-17
Successor callsigns
Callsigns held now by people who previously held KS9OAT.
No current licensee on record previously held this callsign.