Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP4QAT callsign genealogy
Currently held by CRUZ CORTES, WILLIAM
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 WP4QAT's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held WP4QAT.
- CRUZ CORTES, WILLIAMPRgranted 2018-09-15