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

KP4AT callsign genealogy

Currently held by Ducros, Joseph 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 KP4AT's current licensee, walking backwards.

  1. KP4LATcancelled· E
    Torres, Luis APRgranted 2013-02-20cancelled 2016-08-09
  2. KP4FCJcancelled· G
    Torres, Luis APRgranted 2006-12-12cancelled 2013-02-20

Successor callsigns

Callsigns held now by people who previously held KP4AT.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign KP4AT, oldest first.

  • Ducros, Joseph C FL
    2004-07-20 → cancelled 2016-07-21
  • Torres, Luis A PR
    2016-08-09 active
← Back to KP4AT License history →