Confidence: Medium · Source: FCC ULS · As of 2026-09-15
KC9YCO callsign genealogy
Currently held by RODRIGUEZ, JOHN
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 KC9YCO's current licensee, walking backwards.
- RODRIGUEZ, JOHNILgranted 2003-07-12cancelled 2013-01-11
Successor callsigns
Callsigns held now by people who previously held KC9YCO.
No current licensee on record previously held this callsign.