uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-12

KX5DX callsign genealogy

Currently held by Crespo, CARLOS 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 KX5DX's current licensee, walking backwards.

  1. AF5IZcancelled· E
    Crespo, CARLOS APRgranted 2006-10-28cancelled 2013-04-19
  2. WP4MZRcancelled· E
    Crespo, CARLOS ATXgranted 2006-10-28cancelled 2013-03-19

Successor callsigns

Callsigns held now by people who previously held KX5DX.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign KX5DX, oldest first.

  • WINDMILL FARM CONTEST ASSOCIATION TX
    1997-07-28 → cancelled 2009-07-29
  • Crespo, CARLOS A TX
    2023-04-12 active
← Back to KX5DX License history →