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

WW1L callsign genealogy

Currently held by MC CARTHY, ROBERT 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 WW1L's current licensee, walking backwards.

  1. KO1DXcancelled· E
    HAVENS, TIMOTHY RMEgranted 2018-02-16cancelled 2019-08-27
  2. NW0Wactive· E
    Roop Jr, Gerald CCOgranted 2020-03-07
  3. AD0OBcancelled· E
    Roop Jr, Gerald CCOgranted 2015-09-11cancelled 2020-03-07
  4. KC0VMJcancelled· E
    Roop Jr, Gerald CCOgranted 2005-11-16cancelled 2015-03-23

Successor callsigns

Callsigns held now by people who previously held WW1L.

  1. WY1Ccancelled· E
    GIUDITTA, JOEL ACTgranted 2001-10-13cancelled 2011-02-18

All historical holders

Every license row we've seen with the callsign WW1L, oldest first.

  • MC CARTHY, ROBERT J CT
    2007-08-01 → cancelled 2019-08-07
  • HAVENS, TIMOTHY R ME
    2019-08-27 active
← Back to WW1L License history →