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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

KD1OY callsign genealogy

Currently held by BROWN, LINWOOD G

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 KD1OY's current licensee, walking backwards.

  1. W1LBactive· E
    Westover, Milton EMAgranted 2018-05-18
  2. WI1Yactive· E
    DEFRA, LAGROMISCTgranted 2020-07-31
  3. AC1JPcancelled· E
    DEFRA, LAGROMISCTgranted 2019-06-18cancelled 2020-07-31
  4. KQ0Oactive· E
    Sullivan, Edward GMNgranted 2023-01-31
  5. AE0SYcancelled· E
    Sullivan, Edward GMNgranted 2015-01-27cancelled 2023-01-31
  6. KC0UGDcancelled· E
    Sullivan, Edward GMNgranted 2015-01-27cancelled 2022-12-16

Successor callsigns

Callsigns held now by people who previously held KD1OY.

  1. W1LBcancelled· E
    BROWN, LINWOOD GCTgranted 2010-02-17cancelled 2016-04-29

All historical holders

Every license row we've seen with the callsign KD1OY, oldest first.

  • BROWN, LINWOOD G CT
    2003-10-17 → cancelled 2010-02-17
  • BROWN, LINWOOD G CT
    2026-03-17 active
← Back to KD1OY License history →