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

WP4GRC callsign genealogy

Currently held by ROSADO Mr., 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 WP4GRC's current licensee, walking backwards.

  1. KP4CRNactive· G
    ROBLES, CARLOS RPRgranted 2018-10-23
  2. WP4FLCcancelled· T
    ROBLES, CARLOS RPRgranted 2011-07-20cancelled 2018-10-23

Successor callsigns

Callsigns held now by people who previously held WP4GRC.

  1. KP4CARactive· E
    ROSADO, CARLOS APRgranted 2017-04-29

All historical holders

Every license row we've seen with the callsign WP4GRC, oldest first.

  • ROSADO Mr., CARLOS A PR
    2000-11-29 → cancelled 2006-11-04
  • Grupo De Recuperacion Comunitaria PR
    2016-07-08 active
← Back to WP4GRC License history →