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

K5KOK callsign genealogy

Currently held by Ganster Sr, John M

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 K5KOK's current licensee, walking backwards.

  1. WA3HJPcancelled· E
    Ganster Sr, John MOKgranted 2011-01-20cancelled 2012-02-14
  2. KI5MZcancelled· A
    GANSTER SR, JOHN MTXgranted 1991-01-22cancelled 2001-03-10
  3. WA6KNE
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held K5KOK.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K5KOK, oldest first.

  • CASTRO, KAY H TX
    1999-03-09 → cancelled 2010-10-22
  • Ganster Sr, John M OK
    2022-01-11 active
← Back to K5KOK License history →