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

W6UDX callsign genealogy

Currently held by Greene, Ronald B

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 W6UDX's current licensee, walking backwards.

  1. N6IBactive· E
    WARD, MARK KMTgranted 2020-01-17
  2. WF7Ucancelled· E
    Sundquist, PaulWAgranted 2022-02-05cancelled 2025-01-11
  3. KK7AMWcancelled· E
    Sundquist, PaulWAgranted 2021-08-26cancelled 2022-02-05

Successor callsigns

Callsigns held now by people who previously held W6UDX.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign W6UDX, oldest first.

  • DEVINS, DELBERT W CA
    1998-01-15 → cancelled 2008-07-01
  • Greene, Ronald B CA
    2009-06-09 → cancelled 2021-06-10
← Back to W6UDX License history →