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

ND1O callsign genealogy

Currently held by DURVIN JR, THOMAS A

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 ND1O's current licensee, walking backwards.

  1. AA1KHactive· E
    Harriott, Kevin PWAgranted 2025-05-13
  2. AJ7EBcancelled· E
    Harriott, Kevin PWAgranted 2025-03-21cancelled 2025-05-13
  3. KK7ZUWcancelled· E
    Harriott, Kevin PWAgranted 2025-03-21cancelled 2025-04-17

Successor callsigns

Callsigns held now by people who previously held ND1O.

  1. WA1FVMexpired· E
    KAISER, WOLFGANG WNHgranted 2008-03-11cancelled 2020-04-29

All historical holders

Every license row we've seen with the callsign ND1O, oldest first.

  • DURVIN JR, THOMAS A RI
    2019-04-15 active
  • KAISER, WOLFGANG W
    — → cancelled 1998-04-28
← Back to ND1O License history →