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

KS1D callsign genealogy

Currently held by Keller, Steven 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 KS1D's current licensee, walking backwards.

  1. AB3KNactive· E
    NELSON, KENNETH EMDgranted 2018-03-02
  2. AB3CNcancelled· E
    NELSON, KENNETH EMDgranted 2013-01-08cancelled 2018-03-02
  3. N8DXNcancelled· E
    NELSON, KENNETH EMDgranted 2003-01-17cancelled 2005-02-04

Successor callsigns

Callsigns held now by people who previously held KS1D.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign KS1D, oldest first.

  • TRAINOR SR, THOMAS M MA
    1998-10-21 → cancelled 2010-10-22
  • Keller, Steven D PA
    2020-11-10 active
← Back to KS1D License history →