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

KB1D callsign genealogy

Currently held by WEBB, MARC S

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 KB1D's current licensee, walking backwards.

  1. NT1Sactive· E
    Schroder, Robert TMDgranted 2023-05-13
  2. N2RTScancelled· E
    Schroder, Robert TCTgranted 2021-09-04cancelled 2023-05-13
  3. KO4SQTcancelled· T
    Schroder, Robert TVAgranted 2021-08-17cancelled 2021-09-04

Successor callsigns

Callsigns held now by people who previously held KB1D.

  1. WB0MHLactive· E
    JENSEN, JOEL DMNgranted 2019-04-05

All historical holders

Every license row we've seen with the callsign KB1D, oldest first.

  • WEBB, MARC S FL
    2003-05-20 → cancelled 2015-08-18
  • JENSEN, JOEL D MN
    2015-09-15 → cancelled 2019-04-05
  • Helms, Gregory P ME
    2021-04-24 active
← Back to KB1D License history →