Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1CHA callsign genealogy
Currently held by MATSUSHIME, MAMORU
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 W1CHA's current licensee, walking backwards.
- MATSUSHIME, MAMORUTXgranted 2021-06-16cancelled 2022-01-05
Successor callsigns
Callsigns held now by people who previously held W1CHA.
No current licensee on record previously held this callsign.