Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4EFW callsign genealogy
Currently held by Zieman, Joseph C
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 K4EFW's current licensee, walking backwards.
- Gastin, DanielMSgranted 2022-01-18cancelled 2022-02-18
Successor callsigns
Callsigns held now by people who previously held K4EFW.
- WAMSLEY, ERNEST FGAgranted 2017-11-07cancelled 2020-09-09
All historical holders
Every license row we've seen with the callsign K4EFW, oldest first.
- WAMSLEY, ERNEST F GA1998-11-06 → cancelled 2008-02-02
- Zieman, Joseph C VA2009-10-20 → cancelled 2021-10-21
- Gastin, Daniel FL2022-02-18 active