Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KH2C callsign genealogy
Currently held by Buettner, Stephan
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 KH2C's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KH2C.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KH2C, oldest first.
- YOSHII, YUTAKA CA2008-12-02 → cancelled 2020-12-03
- Buettner, Stephan GU2020-12-22 active