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

W0MDR callsign genealogy

Currently held by ROBERTSON, MARK D

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 W0MDR's current licensee, walking backwards.

  1. AB0EVcancelled· E
    ROBERTSON, MARK DCOgranted 1997-03-26cancelled 2006-01-10
  2. NB7Cactive· E
    SORENSEN, CARL GIDgranted 2020-03-30
  3. KA7ANMactive· T
    SORENSEN, DIANA LIDgranted 2023-02-09
  4. KD7SSWcancelled· T
    Sorensen, Diana LIDgranted 2002-09-24cancelled 2002-10-22

Successor callsigns

Callsigns held now by people who previously held W0MDR.

No current licensee on record previously held this callsign.

← Back to W0MDR License history →