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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

KR4D callsign genealogy

Currently held by Martins, Douglas J

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 KR4D's current licensee, walking backwards.

  1. AI4PVactive
    Pinson Valley High School Amateur Radio ClubALgranted 2021-06-02
  2. KN4BBDcancelled
    Pinson Valley High School Amateur Radio ClubALgranted 2017-02-17cancelled 2021-06-02

Successor callsigns

Callsigns held now by people who previously held KR4D.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign KR4D, oldest first.

  • SCHORN, VICTOR J TN
    1999-04-29 → cancelled 2003-12-09
  • Martins, Douglas J SC
    2026-06-19 active
← Back to KR4D License history →