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

KP4BOB callsign genealogy

Currently held by Negron-Santini, Roberto

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 KP4BOB's current licensee, walking backwards.

  1. WP4OKcancelled· T
    Negron-Santini, RobertoPRgranted 2020-09-01cancelled 2021-10-05
  2. KA4ROBcancelled· T
    Negron-Santini, RobertoPRgranted 2019-06-25cancelled 2020-09-01

Successor callsigns

Callsigns held now by people who previously held KP4BOB.

  1. KA4ROBcancelled· T
    Negron-Santini, RobertoPRgranted 2019-06-25cancelled 2020-09-01
  2. NP3BFcancelled· T
    Negron-Santini, RobertoPRgranted 2011-11-29cancelled 2012-01-21

All historical holders

Every license row we've seen with the callsign KP4BOB, oldest first.

  • Negron-Santini, Roberto PR
    2011-05-24 → cancelled 2011-11-29
  • Negron-Santini, Roberto FL
    2012-05-15 → cancelled 2019-06-25
  • Negron-Santini, Roberto PR
    2021-10-05 active
← Back to KP4BOB License history →