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

N1BAA 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 N1BAA's current licensee, walking backwards.

  1. N4BAAactive· E
    CASTILLO, JOSEINgranted 2020-03-17

Successor callsigns

Callsigns held now by people who previously held N1BAA.

  1. N4BAAactive· E
    CASTILLO, JOSEINgranted 2020-03-17
  2. NB1Vexpired· E
    TOMASZEWSKI, HENRYRIgranted 1992-12-22cancelled 2004-12-23