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

KB7LZ callsign genealogy

Currently held by SMITH, WILLIAM C

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 KB7LZ's current licensee, walking backwards.

  1. KO4BWEcancelled· T
    Zwemke, Darrell LVAgranted 2020-02-13cancelled 2020-03-03

Successor callsigns

Callsigns held now by people who previously held KB7LZ.

  1. KQ1Sactive· E
    SMITH, WILLIAM CSCgranted 2018-06-26

All historical holders

Every license row we've seen with the callsign KB7LZ, oldest first.

  • ZWEMKE, DARRELL L UT
    1994-12-20 → cancelled 2006-12-21
  • SMITH, WILLIAM C AZ
    2018-04-20 → cancelled 2018-06-26
  • Zwemke, Darrell L VA
    2020-03-03 active
← Back to KB7LZ License history →