Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4ECO callsign genealogy
Currently held by Cook, Ethan F
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 K4ECO's current licensee, walking backwards.
- Cook, Ethan FALgranted 2015-05-04cancelled 2015-06-30
Successor callsigns
Callsigns held now by people who previously held K4ECO.
No current licensee on record previously held this callsign.