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

W7DA callsign genealogy

Currently held by NORTH SEATTLE AMATEUR RADIO CLUB INC

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 W7DA's current licensee, walking backwards.

  1. NO7Kactive· E
    LACIO, KYLE BSCgranted 2024-08-23
  2. KX4VAcancelled· E
    LACIO, KYLE BSCgranted 2018-03-19cancelled 2024-08-23
  3. KN4KSAcancelled· E
    LACIO, KYLE BSCgranted 2018-03-19cancelled 2019-10-22

Successor callsigns

Callsigns held now by people who previously held W7DA.

  1. W1AAAactive· E
    KOBAYASHI, NOBUOORgranted 2020-07-14

All historical holders

Every license row we've seen with the callsign W7DA, oldest first.

  • NORTH SEATTLE AMATEUR RADIO CLUB INC WA
    1997-03-06 → cancelled 2009-03-07
  • KOBAYASHI, NOBUO OR
    2019-03-05 → cancelled 2020-07-14
  • FARNSWORTH, DALE AZ
    2022-08-02 active
← Back to W7DA License history →