Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KK6ZSB callsign genealogy
Currently held by Yu, Heindrick
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 KK6ZSB's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KK6ZSB.
- Yu, HeindrickCAgranted 2016-01-05cancelled 2016-02-26