Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4ZCO callsign genealogy
Currently held by ARAVENA, PATRICIO D
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 K4ZCO's current licensee, walking backwards.
- ARAVENA, PATRICIO DSCgranted 2023-09-06cancelled 2023-10-31
Successor callsigns
Callsigns held now by people who previously held K4ZCO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4ZCO, oldest first.
- EDWARDS, ROBERT H FL2004-01-08 → cancelled 2016-03-16
- ARAVENA, PATRICIO D SC2023-10-31 active