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

N1OC callsign genealogy

Currently held by Walsh, Shawn M

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 N1OC's current licensee, walking backwards.

  1. K5NLGcancelled· E
    WALSH, SHAWN MTXgranted 2017-06-27cancelled 2024-07-19
  2. N0DXRactive· A
    Vendt, Clifford WNHgranted 2020-10-24
  3. KB1FFcancelled· A
    Vendt, Clifford WNHgranted 2013-11-06cancelled 2020-10-24

Successor callsigns

Callsigns held now by people who previously held N1OC.

  1. K5BTGactive· E
    Walsh, Shawn MTXgranted 2026-01-03

All historical holders

Every license row we've seen with the callsign N1OC, oldest first.

  • Martorell, Miguel A NY
    2013-01-24 → cancelled 2024-07-02
  • Walsh, Shawn M TX
    2024-07-19 → cancelled 2026-01-03
← Back to N1OC License history →