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

WC0A callsign genealogy

Currently held by HARA, TAISUKE

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 WC0A's current licensee, walking backwards.

  1. KH0XOcancelled· E
    HARA, TAISUKENYgranted 2011-10-24cancelled 2012-10-06

Successor callsigns

Callsigns held now by people who previously held WC0A.

  1. N0ZLcancelled· E
    HANSEN, MARK SIAgranted 2010-09-17cancelled 2016-05-14

All historical holders

Every license row we've seen with the callsign WC0A, oldest first.

  • NEFF, FRED A IA
    1997-02-11 → cancelled 1999-07-23
  • HANSEN, MARK S IA
    2008-07-08 → cancelled 2010-09-17
  • HARA, TAISUKE NY
    2022-07-12 active
← Back to WC0A License history →