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

KK4ZX callsign genealogy

Currently held by WOLVERTON, J 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 KK4ZX's current licensee, walking backwards.

  1. K4GBXcancelled· E
    WOLVERTON, J CGAgranted 2010-03-06cancelled 2014-10-15
  2. KI4RKUcancelled· T
    WOLVERTON, J CGAgranted 2006-09-25cancelled 2010-03-06

Successor callsigns

Callsigns held now by people who previously held KK4ZX.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign KK4ZX, oldest first.

  • OLIVER SR, GEORGE F FL
    1988-04-05 → cancelled 2000-04-06
  • WOLVERTON, J C PA
    2024-09-24 active
← Back to KK4ZX License history →