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Confidence: Medium · Source: FCC ULS · As of 2026-10-27

N4JS callsign genealogy

Currently held by SIMMONS, JOHN E

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 N4JS's current licensee, walking backwards.

  1. N9BGactive· E
    Greenwood, WilliamILgranted 2026-10-06
  2. AD9IHcancelled· E
    Greenwood, WilliamILgranted 2026-02-04cancelled 2026-10-06
  3. KE9ETFcancelled· E
    Greenwood, WilliamILgranted 2026-02-04cancelled 2026-02-20

Successor callsigns

Callsigns held now by people who previously held N4JS.

  1. W2AGNactive· E
    SIELKE, JOHN LNJgranted 2020-10-13

All historical holders

Every license row we've seen with the callsign N4JS, oldest first.

  • SIELKE, JOHN L NJ
    1996-05-13 → cancelled 2000-08-08
  • SIMMONS, JOHN E NC
    2012-05-31 → cancelled 2024-08-29
  • SWOFFORD, JOHN W FL
    2024-09-17 active
← Back to N4JS License history →