Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4FET callsign genealogy
Currently held by Guppy, John E
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 W4FET's current licensee, walking backwards.
- Guppy, John EFLgranted 2016-02-23cancelled 2016-03-12
Successor callsigns
Callsigns held now by people who previously held W4FET.
No current licensee on record previously held this callsign.