Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6HSU callsign genealogy
Currently held by Hsu, Andy
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 K6HSU's current licensee, walking backwards.
- Hsu, AndyCAgranted 2008-11-12cancelled 2010-08-10
Successor callsigns
Callsigns held now by people who previously held K6HSU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6HSU, oldest first.
- JACOBSON, EDWARD A CA1998-07-22 → cancelled 2010-07-23
- Hsu, Andy CA2020-12-08 active