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

N4SI callsign genealogy

Currently held by PETERSON, L RODNEY

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 N4SI's current licensee, walking backwards.

  1. KF4RBcancelled· E
    BRETON, RINGOFLgranted 2021-12-07cancelled 2023-01-27
  2. K2TDRcancelled· E
    BRETON, RINGO EFLgranted 2015-10-09cancelled 2021-12-07
  3. KG4DUFcancelled· E
    BRETON, RINGO EFLgranted 2009-06-29cancelled 2015-10-09

Successor callsigns

Callsigns held now by people who previously held N4SI.

  1. K4QGactive· E
    PETERSON, L RODNEYFLgranted 2018-11-01

All historical holders

Every license row we've seen with the callsign N4SI, oldest first.

  • JOHNSON, NEIL P FL
    2010-11-24 → cancelled 2023-01-07
  • BRETON, RINGO FL
    2023-01-27 active
  • PETERSON, L RODNEY
    — → cancelled 1998-12-15
← Back to N4SI License history →