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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

N4BAA callsign genealogy

Currently held by CASTILLO, JOSE 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 N4BAA's current licensee, walking backwards.

  1. N1BAAcancelled· E
    CASTILLO, JOSE AMAgranted 2007-06-26cancelled 2010-04-30

Successor callsigns

Callsigns held now by people who previously held N4BAA.

  1. N1BAAcancelled· E
    CASTILLO, JOSE AMAgranted 2007-06-26cancelled 2010-04-30

All historical holders

Every license row we've seen with the callsign N4BAA, oldest first.

  • CASTILLO, JOSE A VA
    2002-04-09 → cancelled 2007-06-26
  • CASTILLO, JOSE IN
    2020-03-17 active
← Back to N4BAA License history →