Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC4BY callsign genealogy
Currently held by KING COUNTY 4X4 RESCUE COUNCIL INC
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 KC4BY's current licensee, walking backwards.
- KE7IQKcancelledKING COUNTY 4X4 RESCUE COUNCIL INCWAgranted 2006-07-28cancelled 2007-03-13
Successor callsigns
Callsigns held now by people who previously held KC4BY.
No current licensee on record previously held this callsign.