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

WC6B callsign genealogy

Currently held by WWARC

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 WC6B's current licensee, walking backwards.

  1. KM6QOScancelled· E
    STEIN, AARONCAgranted 2018-02-22cancelled 2020-10-09

Successor callsigns

Callsigns held now by people who previously held WC6B.

  1. AK2Jactive· E
    Matsuura, ToshiakiHIgranted 2018-09-18

All historical holders

Every license row we've seen with the callsign WC6B, oldest first.

  • COOK, WILLIAM L CA
    1994-05-31 → cancelled 2006-06-01
  • WWARC AZ
    2006-06-20 → cancelled 2018-06-21
  • Matsuura, Toshiaki HI
    2018-07-10 → cancelled 2018-09-18
  • STEIN, AARON J AZ
    2020-10-09 active
← Back to WC6B License history →