Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7JSQ callsign genealogy
Currently held by LIU, PU
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 W7JSQ's current licensee, walking backwards.
- LIU, PUPAgranted 2020-07-14cancelled 2021-12-21
Successor callsigns
Callsigns held now by people who previously held W7JSQ.
No current licensee on record previously held this callsign.