Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KH6YU callsign genealogy
Currently held by VETTER, JULIUS 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 KH6YU's current licensee, walking backwards.
- YU, LIANG HANHIgranted 2009-01-06cancelled 2017-07-28
Successor callsigns
Callsigns held now by people who previously held KH6YU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KH6YU, oldest first.
- VETTER, JULIUS M HI1994-01-18 → cancelled 2006-01-19
- YU, LIANG HAN HI2017-07-28 active