Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KZ4WS callsign genealogy
Currently held by Guo, Zhenyu
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 KZ4WS's current licensee, walking backwards.
- Guo, ZhenyuTNgranted 2015-09-25cancelled 2025-09-12
Successor callsigns
Callsigns held now by people who previously held KZ4WS.
No current licensee on record previously held this callsign.