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

W6SDK callsign genealogy

Currently held by Kaplan, Sid D

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 W6SDK's current licensee, walking backwards.

  1. K6DISactive· A
    Smith, Daniel ICAgranted 2025-05-06
  2. N6RZJcancelled· A
    Smith, Daniel ICAgranted 2021-02-03cancelled 2025-05-06
  3. WA6GNK
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held W6SDK.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign W6SDK, oldest first.

  • CHASSAING, LLOYD R CA
    1996-07-29 → cancelled 2008-07-30
  • Kaplan, Sid D FL
    2018-05-15 active
← Back to W6SDK License history →