Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NA4CT callsign genealogy
Currently held by Liu, Chunhai
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 NA4CT's current licensee, walking backwards.
- Liu, ChunhaiFLgranted 2026-03-19cancelled 2026-06-15
Successor callsigns
Callsigns held now by people who previously held NA4CT.
No current licensee on record previously held this callsign.