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

W1DX callsign genealogy

Currently held by LITCHFIELD, THADDEUS L

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 W1DX's current licensee, walking backwards.

  1. W1AAAactive· E
    KOBAYASHI, NOBUOORgranted 2020-07-14
  2. W7DAactive· E
    FARNSWORTH, DALEAZgranted 2022-08-02
  3. NO7Kactive· E
    LACIO, KYLE BSCgranted 2024-08-23
  4. KX4VAcancelled· E
    LACIO, KYLE BSCgranted 2018-03-19cancelled 2024-08-23
  5. KN4KSAcancelled· E
    LACIO, KYLE BSCgranted 2018-03-19cancelled 2019-10-22

Successor callsigns

Callsigns held now by people who previously held W1DX.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign W1DX, oldest first.

  • GOODMAN, BYRON H CT
    1998-03-17 → cancelled 2004-05-11
  • LITCHFIELD, THADDEUS L MA
    2006-05-23 → cancelled 2006-05-24
  • AMATEUR WIRELESS ASSOC OF SOUTH EASTERN CT CT
    2026-03-18 active
← Back to W1DX License history →