Confidence: Medium · Source: FCC ULS · As of 2026-09-11
W4GPU callsign genealogy
Currently held by Gelbutovskiy, Alex
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 W4GPU's current licensee, walking backwards.
- Gelbutovskiy, AlexFLgranted 2026-04-21cancelled 2026-05-09
Successor callsigns
Callsigns held now by people who previously held W4GPU.
No current licensee on record previously held this callsign.