Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4RTC callsign genealogy
Currently held by RIVERO, JUAN C
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 K4RTC's current licensee, walking backwards.
- RIVERO, JUAN CFLgranted 2003-03-28cancelled 2005-07-06
Successor callsigns
Callsigns held now by people who previously held K4RTC.
No current licensee on record previously held this callsign.