Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0EFW callsign genealogy
Currently held by Clark, Ryan W
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 K0EFW's current licensee, walking backwards.
- Clark, Ryan WCAgranted 2020-01-28cancelled 2020-09-29
Successor callsigns
Callsigns held now by people who previously held K0EFW.
- Clark, Ryan WCAgranted 2022-07-16