Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC0JO callsign genealogy
Currently held by Ellsworth, Sterling M
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 KC0JO's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KC0JO.
No current licensee on record previously held this callsign.