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

AI9IN callsign genealogy

Currently held by KRISTOFF, STEVEN 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 AI9IN's current licensee, walking backwards.

  1. KG9HMcancelled· E
    KRISTOFF, STEVEN RINgranted 2003-03-27cancelled 2012-12-27
  2. N9PSGactive· G
    GANNON, PATRICK SFLgranted 2016-09-27
  3. KC9KFLcancelled· G
    GANNON, PATRICK SFLgranted 2016-09-07cancelled 2016-09-27

Successor callsigns

Callsigns held now by people who previously held AI9IN.

No current licensee on record previously held this callsign.

← Back to AI9IN License history →