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

K6MDX callsign genealogy

Currently held by Mabuhay DX Contest Club

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 K6MDX's current licensee, walking backwards.

  1. AD0BOcancelled
    Mabuhay DX Contest ClubCAgranted 2022-07-23cancelled 2024-10-01
  2. NA6DUcancelled
    Mabuhay DX Contest ClubCAgranted 2021-11-02cancelled 2022-07-23
  3. KN6QHScancelled
    Mabuhay DX Contest ClubCAgranted 2021-09-01cancelled 2021-11-02

Successor callsigns

Callsigns held now by people who previously held K6MDX.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K6MDX, oldest first.

  • MABUHAY DX GROUP CA
    1997-02-10 → cancelled 2000-06-05
  • Hill, Lawrence L CA
    2012-04-28 → cancelled 2024-05-08
  • Mabuhay DX Contest Club CA
    2024-10-01 active
← Back to K6MDX License history →