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

K4BYN callsign genealogy

Currently held by ALEXANDER, LOUIS 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 K4BYN's current licensee, walking backwards.

  1. W4QCactive· E
    LOGSDON, MARK SALgranted 2025-04-01
  2. K9MLactive· E
    Chromzack, Thomas BILgranted 2017-04-11
  3. KC9EGBcancelled· E
    Chromzack, Thomas BILgranted 2003-05-30cancelled 2007-06-23

Successor callsigns

Callsigns held now by people who previously held K4BYN.

  1. W4QCcancelled· E
    ALEXANDER, LOUIS BNCgranted 2002-07-26cancelled 2003-05-13

All historical holders

Every license row we've seen with the callsign K4BYN, oldest first.

  • ALEXANDER, LOUIS B NC
    1998-12-16 → cancelled 2002-07-26
  • ALEXANDER, LOUIS B NC
    2023-03-07 active
← Back to K4BYN License history →