Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WA4EFY callsign genealogy
Currently held by Poston, William M
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 WA4EFY's current licensee, walking backwards.
- Flugstad, MarleyGAgranted 2023-08-01cancelled 2025-02-01
Successor callsigns
Callsigns held now by people who previously held WA4EFY.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WA4EFY, oldest first.
- Poston, William M GA2008-12-05 → cancelled 2021-02-17
- Flugstad, Marley FL2025-02-01 active