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

W3SW callsign genealogy

Currently held by SCHAEFER, ANDREW J

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 W3SW's current licensee, walking backwards.

  1. WA3WKAactive· T
    SCHAEFER, KAREN CNYgranted 2017-01-27
  2. KC2QXYcancelled· T
    SCHAEFER, KAREN CNYgranted 2007-02-06cancelled 2007-02-27

Successor callsigns

Callsigns held now by people who previously held W3SW.

  1. K3KZcancelled· E
    RINGEL, MALCOLM HMDgranted 1997-02-12cancelled 2006-06-16
← Back to W3SW License history →