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

KO0L callsign genealogy

Currently held by POWELL, JASON A

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 KO0L's current licensee, walking backwards.

  1. NX4Kcancelled· E
    POWELL, JASON ANCgranted 2024-06-21cancelled 2024-09-17
  2. KK4Kactive· E
    Dos Santos, Dante VFLgranted 2026-07-10
  3. KK3Pcancelled· E
    Dos Santos, Dante VFLgranted 2026-03-27cancelled 2026-07-10
  4. K4BMIcancelled· E
    Dos Santos, Dante VFLgranted 2024-12-21cancelled 2026-03-27
  5. KQ4ZEWcancelled· T
    Dos Santos, Dante VFLgranted 2024-11-30cancelled 2024-12-21

Successor callsigns

Callsigns held now by people who previously held KO0L.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign KO0L, oldest first.

  • RUGGIERI, JOSEPH L AR
    2012-08-28 → cancelled 2024-08-29
  • POWELL, JASON A NC
    2024-09-17 active
← Back to KO0L License history →