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

K7OO callsign genealogy

Currently held by DARLING, WILLIAM R

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 K7OO's current licensee, walking backwards.

  1. AJ7HQcancelled· E
    Steckler, Paul AORgranted 2025-11-22cancelled 2026-02-03

Successor callsigns

Callsigns held now by people who previously held K7OO.

  1. N7AMactive· E
    DARLING, WILLIAM RNVgranted 2024-01-13
  2. K9DKWexpired· E
    Henry, Lyle CCAgranted 2014-07-08cancelled 2026-07-09

All historical holders

Every license row we've seen with the callsign K7OO, oldest first.

  • Henry, Lyle C CA
    2014-05-13 → cancelled 2014-07-08
  • DARLING, WILLIAM R OR
    2016-07-29 → cancelled 2024-01-13
  • Steckler, Paul A OR
    2026-02-03 active
← Back to K7OO License history →