Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ4OBG callsign genealogy
Currently held by HECHAVARRIA PUPO, CARLOS
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 KJ4OBG'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 KJ4OBG.
- HECHAVARRIA PUPO, CARLOSFLgranted 2020-08-11cancelled 2022-03-04