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

KT7TT callsign genealogy

Currently held by NIELSEN, MARK H

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 KT7TT's current licensee, walking backwards.

  1. K7ETGcancelled· A
    NIELSEN, MARK HAZgranted 2007-08-31cancelled 2014-05-02
  2. KA7ETGcancelled
    cancelled 1997-10-15

Successor callsigns

Callsigns held now by people who previously held KT7TT.

  1. W7DOGactive· E
    ROBERTS, THOMAS LAZgranted 2018-10-19

All historical holders

Every license row we've seen with the callsign KT7TT, oldest first.

  • NIELSEN, MARK H AZ
    2024-03-02 active
  • ROBERTS, THOMAS L
    — → cancelled 1999-01-14
← Back to KT7TT License history →