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Confidence: Medium · Source: FCC ULS · As of 2026-09-12

NP4R callsign genealogy

Currently held by RODRIGUEZ OLIVERAS, MIGUEL 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 NP4R's current licensee, walking backwards.

  1. WP4RIGcancelled· E
    RODRIGUEZ OLIVERAS, MIGUEL APRgranted 2019-10-31cancelled 2022-12-20

Successor callsigns

Callsigns held now by people who previously held NP4R.

  1. NP3Zactive· E
    GARCIA CARTAGENA, HECTOR RPRgranted 2020-12-01

All historical holders

Every license row we've seen with the callsign NP4R, oldest first.

  • SCHULER, JOHN R PR
    1987-08-25 → cancelled 1999-09-01
  • GARCIA CARTAGENA, HECTOR R PR
    2020-01-25 → cancelled 2020-12-01
  • RODRIGUEZ OLIVERAS, MIGUEL A PR
    2022-12-20 active
← Back to NP4R License history →