Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0ECH callsign genealogy
Currently held by Butler, Geoffrey J
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 K0ECH's current licensee, walking backwards.
- Butler, Geoffrey JCAgranted 2012-07-20cancelled 2012-08-14
Successor callsigns
Callsigns held now by people who previously held K0ECH.
No current licensee on record previously held this callsign.