uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-14

N9KK callsign genealogy

Currently held by Three Alpha Illinois

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 N9KK's current licensee, walking backwards.

  1. KC9TCRcancelled
    Three Alpha IllinoisILgranted 2010-09-23cancelled 2010-11-09

Successor callsigns

Callsigns held now by people who previously held N9KK.

  1. WA9WCexpired· E
    CONLON, WILLIAMILgranted 2008-10-21cancelled 2020-10-22

All historical holders

Every license row we've seen with the callsign N9KK, oldest first.

  • GUTHRIE, JAMES R IN
    1998-02-20 → cancelled 2002-07-31
  • CONLON, WILLIAM IL
    2008-05-20 → cancelled 2008-10-21
  • Three Alpha Illinois IL
    2020-08-26 active
← Back to N9KK License history →