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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

NI9U callsign genealogy

Currently held by Schrock, Christian J

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 NI9U's current licensee, walking backwards.

  1. KB9SOLcancelled· E
    Schrock, Christian JINgranted 2008-04-08cancelled 2011-06-21

Successor callsigns

Callsigns held now by people who previously held NI9U.

  1. K9EZactive· E
    WINRICH, KENT ANCgranted 2019-10-25

All historical holders

Every license row we've seen with the callsign NI9U, oldest first.

  • Schrock, Christian J IA
    2021-06-16 active
  • WINRICH, KENT A
    — → cancelled 1999-07-09
← Back to NI9U License history →