Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC0BTS callsign genealogy
Currently held by GRENIER, JOHN E
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 KC0BTS's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KC0BTS.
- GRENIER, JOHN ECOgranted 2007-05-31cancelled 2011-03-29