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

KZ4TL callsign genealogy

Currently held by KARLOSKY, KARL L

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 KZ4TL's current licensee, walking backwards.

  1. KW4LDcancelled· E
    KARLOSKY, KARL LFLgranted 2025-04-08cancelled 2025-05-28
  2. KM4IIVcancelled· E
    KARLOSKY, KARL LFLgranted 2015-03-02cancelled 2015-06-25

Successor callsigns

Callsigns held now by people who previously held KZ4TL.

  1. K9KLKactive· E
    KARLOSKY, KARL LFLgranted 2025-07-25
← Back to KZ4TL License history →