Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KS3E callsign genealogy
Currently held by Lu, Zichen
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 KS3E's current licensee, walking backwards.
- Lu, ZichenDEgranted 2025-05-02cancelled 2026-04-03
Successor callsigns
Callsigns held now by people who previously held KS3E.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KS3E, oldest first.
- Lanyon Jr, John M DE2014-03-08 → cancelled 2026-03-10
- Lu, Zichen DE2026-04-03 active