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

N9SOX callsign genealogy

Currently held by CASE, RYAN 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 N9SOX's current licensee, walking backwards.

  1. K5AMTactive· E
    Brewer, Jonathan WARgranted 2026-09-04
  2. KE5QEScancelled· E
    Brewer, Jonathan WARgranted 2017-06-07cancelled 2026-09-04

Successor callsigns

Callsigns held now by people who previously held N9SOX.

  1. K5AMTcancelled· E
    CASE, RYAN AILgranted 2018-06-16cancelled 2019-11-08

All historical holders

Every license row we've seen with the callsign N9SOX, oldest first.

  • CASE, RYAN A TX
    2011-04-23 → cancelled 2018-06-16
  • CASE, RYAN A WI
    2019-11-08 active
← Back to N9SOX License history →