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

KI9F callsign genealogy

Currently held by Walker, Kenneth R

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 KI9F's current licensee, walking backwards.

  1. WX4YYcancelled· E
    Walker, Kenneth RKYgranted 2021-01-26cancelled 2021-02-13
  2. WT2Yactive· E
    Downie, Robert DNCgranted 2021-12-18
  3. KJ4QIVcancelled· E
    Downie, Robert DFLgranted 2009-11-13cancelled 2012-02-28

Successor callsigns

Callsigns held now by people who previously held KI9F.

  1. W9USBactive· E
    Ison, ClayINgranted 2018-12-28

All historical holders

Every license row we've seen with the callsign KI9F, oldest first.

  • MILHONE, JAMES A IL
    2006-01-12 → cancelled 2018-04-04
  • Ison, Clay A IN
    2018-05-30 → cancelled 2018-12-28
  • Walker, Kenneth R KY
    2021-02-13 active
← Back to KI9F License history →