Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WP4LYC callsign genealogy
Currently held by WANG, PHILIP TZANN YEU
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 WP4LYC's current licensee, walking backwards.
- WANG, PHILIP TZANN YEUPRgranted 2019-11-12cancelled 2019-11-30
Successor callsigns
Callsigns held now by people who previously held WP4LYC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WP4LYC, oldest first.
- SANTIAGO, JOSE D PR1993-04-27 → cancelled 2005-04-28
- WANG, PHILIP TZANN YEU PR2019-11-30 active