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

K4OC callsign genealogy

Currently held by Frost, Clint 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 K4OC's current licensee, walking backwards.

  1. W2BLcancelled· E
    Frost, Clint MALgranted 2020-05-27cancelled 2025-01-31
  2. AK4MEactive· E
    Szabo, Daniel JGAgranted 2022-10-29
  3. KO4YLCcancelled· E
    Szabo, Daniel JGAgranted 2022-03-11cancelled 2022-10-29

Successor callsigns

Callsigns held now by people who previously held K4OC.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K4OC, oldest first.

  • CEDERAS, SAMUEL M NC
    2016-12-02 → cancelled 2023-01-11
  • Frost, Clint M AL
    2025-01-31 active
← Back to K4OC License history →