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

KN3O callsign genealogy

Currently held by Overkill Contest Club

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 KN3O's current licensee, walking backwards.

  1. N3TWMcancelled· E
    DUFFEY, EVAN JPAgranted 2015-10-06cancelled 2018-02-16
  2. KC2WBKcancelled· G
    DUFFEY, EVAN JPAgranted 2009-11-06cancelled 2015-10-06

Successor callsigns

Callsigns held now by people who previously held KN3O.

  1. WC5RBcancelled· E
    BROWN JR, RICHARD EOKgranted 2016-01-26cancelled 2016-03-26
  2. NF2Zcancelled
    Overkill Contest ClubNYgranted 2013-03-15cancelled 2018-10-19

All historical holders

Every license row we've seen with the callsign KN3O, oldest first.

  • GLENN, KENNETH R UT
    1998-07-14 → cancelled 2006-09-08
  • Overkill Contest Club NY
    2011-09-13 → cancelled 2013-03-15
  • BROWN JR, RICHARD E OK
    2015-04-24 → cancelled 2016-01-26
  • DUFFEY, EVAN J CA
    2018-02-16 active
← Back to KN3O License history →