Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N6KOS callsign genealogy
Currently held by Raut, Kaustubha S
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 N6KOS's current licensee, walking backwards.
- Raut, Kaustubha SCAgranted 2017-01-11cancelled 2017-01-31
Successor callsigns
Callsigns held now by people who previously held N6KOS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N6KOS, oldest first.
- SMITH, RICHARD J CA1994-07-14 → cancelled 2006-07-15
- Raut, Kaustubha S CA2017-01-31 active