Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KE4RTQ callsign genealogy
Currently held by DE FREITAS, ROBERT S
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 KE4RTQ'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 KE4RTQ.
- DE FREITAS Sr., ROBERT SNCgranted 2019-12-02