Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4BIY callsign genealogy
Currently held by Griego, Rafael
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 W4BIY's current licensee, walking backwards.
- Griego, RafaelFLgranted 2013-03-20cancelled 2013-12-03
Successor callsigns
Callsigns held now by people who previously held W4BIY.
No current licensee on record previously held this callsign.