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

K6MDL callsign genealogy

Currently held by Landau MD, Michael 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 K6MDL's current licensee, walking backwards.

  1. KK6MDLcancelled· G
    Landau MD, Michael DCAgranted 2014-04-01cancelled 2017-02-17
  2. KG6FRLcancelled· G
    Landau, Michael DCAgranted 2011-04-09cancelled 2014-04-01

Successor callsigns

Callsigns held now by people who previously held K6MDL.

  1. K5YWactive· E
    Lange, Mark DTXgranted 2021-07-09

All historical holders

Every license row we've seen with the callsign K6MDL, oldest first.

  • Lange, Mark D TX
    2004-08-13 → cancelled 2011-07-29
  • Landau MD, Michael D CA
    2017-02-17 active
← Back to K6MDL License history →