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

AF6DW callsign genealogy

Currently held by Johnston, Mark E

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 AF6DW's current licensee, walking backwards.

  1. AJ6FUcancelled· E
    Johnston, Mark ECAgranted 2018-06-20cancelled 2018-10-30
  2. KM6UCTcancelled· E
    Johnston, Mark ECAgranted 2018-06-20cancelled 2018-10-09

Successor callsigns

Callsigns held now by people who previously held AF6DW.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign AF6DW, oldest first.

  • WELLS, WILLIAM C CA
    2004-05-06 → cancelled 2016-06-01
  • Johnston, Mark E CA
    2018-10-30 active
← Back to AF6DW License history →