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

KM5JS callsign genealogy

Currently held by KOVACH, FREDERICK P

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 KM5JS's current licensee, walking backwards.

  1. AG5ADcancelled· E
    Serpas, Jeffrey VLAgranted 2011-10-31cancelled 2015-08-28
  2. KC9UXBcancelled· E
    Serpas, Jeffrey VLAgranted 2011-10-31cancelled 2015-08-10

Successor callsigns

Callsigns held now by people who previously held KM5JS.

  1. KI0SWactive· A
    KOVACH, FREDERICK PMOgranted 2018-05-24

All historical holders

Every license row we've seen with the callsign KM5JS, oldest first.

  • KOVACH, FREDERICK P MO
    1997-06-10 → cancelled 2006-07-06
  • Serpas, Jeffrey V LA
    2025-07-02 active
← Back to KM5JS License history →