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

W3IOA callsign genealogy

Currently held by UITERWYK, ROBERT H

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 W3IOA's current licensee, walking backwards.

  1. KB3EOLcancelled· T
    UITERWYK, ROBERT HPAgranted 1993-11-09cancelled 2000-02-08
  2. WB4IOAcancelled· T
    UITERWYK, ROBERT HFLgranted 1993-11-09cancelled 2000-01-20

Successor callsigns

Callsigns held now by people who previously held W3IOA.

  1. W3AFactive· E
    Uiterwyk, RobertFLgranted 2020-08-13
← Back to W3IOA License history →