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

KX4RF callsign genealogy

Currently held by Thompson, Craig S

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 KX4RF's current licensee, walking backwards.

  1. KI0SOcancelled· A
    THOMPSON, CRAIG SFLgranted 2019-04-12cancelled 2019-04-16
  2. AH6PCcancelled· A
    THOMPSON, CRAIG SCOgranted 1997-06-17cancelled 2003-11-22
  3. WD0AHX
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held KX4RF.

No current licensee on record previously held this callsign.

← Back to KX4RF License history →