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

W6ML callsign genealogy

Currently held by Mammoth Lakes Amateur Radio 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 W6ML's current licensee, walking backwards.

  1. W6SKRactive· G
    Ralph, Stephen KAZgranted 2019-10-08
  2. W4SKRactive· E
    DEMPSEY, JOHN DVAgranted 2025-12-31
  3. KF4EMEcancelled· E
    DEMPSEY, JOHN DAEgranted 2006-07-18cancelled 2015-11-13

Successor callsigns

Callsigns held now by people who previously held W6ML.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign W6ML, oldest first.

  • ALEXANDER, WILBUR H CA
    1988-02-02 → cancelled 2000-02-03
  • Mammoth Lakes Amateur Radio Club CA
    2019-12-04 active