Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NA4EC callsign genealogy
Currently held by Castro Montano, Ricardo A
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 NA4EC's current licensee, walking backwards.
- Castro Montano, Ricardo AGAgranted 2024-03-30cancelled 2026-07-22
Successor callsigns
Callsigns held now by people who previously held NA4EC.
No current licensee on record previously held this callsign.