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

WP4OK callsign genealogy

Currently held by CARRERO RODRIGUEZ, RAFAEL T

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 WP4OK's current licensee, walking backwards.

  1. KA4ROBcancelled· T
    Negron-Santini, RobertoPRgranted 2019-06-25cancelled 2020-09-01
  2. KP4BOBactive· T
    Negron-Santini, RobertoPRgranted 2021-10-05

Successor callsigns

Callsigns held now by people who previously held WP4OK.

  1. KP4BOBactive· T
    Negron-Santini, RobertoPRgranted 2021-10-05

All historical holders

Every license row we've seen with the callsign WP4OK, oldest first.

  • CARRERO RODRIGUEZ, RAFAEL T PR
    1988-05-10 → cancelled 2000-05-11
  • Negron-Santini, Roberto PR
    2020-09-01 → cancelled 2021-10-05
← Back to WP4OK License history →