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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

KR0X callsign genealogy

Currently held by MAYZES, MARC 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 KR0X's current licensee, walking backwards.

  1. KC0GTRcancelled· E
    MAYZES, MARC CCOgranted 2024-01-30cancelled 2024-08-30
  2. KF0OQLcancelled· G
    MAYZES, MARC CCOgranted 2024-01-03cancelled 2024-01-30
  3. KF0OOTcancelled· G
    MAYZES, MARC CCOgranted 2024-01-03cancelled 2024-01-11

Successor callsigns

Callsigns held now by people who previously held KR0X.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign KR0X, oldest first.

  • NORMAN, GENE T KY
    2012-05-22 → cancelled 2024-08-13
  • MAYZES, MARC C CO
    2024-08-30 active
← Back to KR0X License history →