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

KP4CD callsign genealogy

Currently held by WORLEY, DANIEL D

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 KP4CD's current licensee, walking backwards.

  1. KP4BOLactive
    ASOCIACION DE RADIOAFICIONADOS DE UTUADOPRgranted 2018-08-21
  2. WP4QGBcancelled
    Asociacion De Radioaficionados De UtuadoPRgranted 2018-07-09cancelled 2018-08-21

Successor callsigns

Callsigns held now by people who previously held KP4CD.

  1. KP4BOLcancelled· A
    DAVILA LOPEZ, CARLOSPRgranted 2010-01-29cancelled 2014-12-09

All historical holders

Every license row we've seen with the callsign KP4CD, oldest first.

  • WORLEY, DANIEL D PR
    1996-01-30 → cancelled 2008-01-31
  • DAVILA LOPEZ, CARLOS PR
    2009-05-27 → cancelled 2010-01-29
  • DAVILA LOPEZ, CARLOS PR
    2026-01-15 active
← Back to KP4CD License history →