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

KO1DX callsign genealogy

Currently held by HAVENS, TIMOTHY R

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 KO1DX's current licensee, walking backwards.

  1. NW0Wactive· E
    Roop Jr, Gerald CCOgranted 2020-03-07
  2. AD0OBcancelled· E
    Roop Jr, Gerald CCOgranted 2015-09-11cancelled 2020-03-07
  3. KC0VMJcancelled· E
    Roop Jr, Gerald CCOgranted 2005-11-16cancelled 2015-03-23

Successor callsigns

Callsigns held now by people who previously held KO1DX.

  1. WW1Lactive· E
    HAVENS, TIMOTHY RMEgranted 2019-08-27
← Back to KO1DX License history →