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

WP4OBI callsign genealogy

Currently held by DELGADO NAZARIO, ING. JOSUE D

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 WP4OBI's current licensee, walking backwards.

  1. NP3MQactive· T
    DELGADO NAZARIO, ING. JOSUE DPRgranted 2017-12-15

Successor callsigns

Callsigns held now by people who previously held WP4OBI.

  1. NP3MQactive· T
    DELGADO NAZARIO, ING. JOSUE DPRgranted 2017-12-15
← Back to WP4OBI License history →