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

NT1D callsign genealogy

Currently held by BECKMANN, MARTIN

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 NT1D's current licensee, walking backwards.

  1. AA1FHcancelled· E
    SCHOENBERG, JON S HMAgranted 2015-11-07cancelled 2021-05-07
  2. AA0FHcancelled· E
    SCHOENBERG, JON S HMAgranted 2011-06-18cancelled 2015-11-07

Successor callsigns

Callsigns held now by people who previously held NT1D.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign NT1D, oldest first.

  • BECKMANN, MARTIN TX
    2009-04-15 → cancelled 2021-04-16
  • SCHOENBERG, JON S H MA
    2021-05-07 active
← Back to NT1D License history →