Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K7EFW callsign genealogy
Currently held by Williams, Nathanael 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 K7EFW's current licensee, walking backwards.
- Williams, Nathanael EORgranted 2021-04-15cancelled 2021-07-07
Successor callsigns
Callsigns held now by people who previously held K7EFW.
- Wise, Eric FOKgranted 2018-01-06
All historical holders
Every license row we've seen with the callsign K7EFW, oldest first.
- Wise, Eric F TX2007-08-14 → cancelled 2008-03-21
- Williams, Nathanael E OR2021-07-07 active