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

K0JWW callsign genealogy

Currently held by WINCHESTER, JAMES W

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 K0JWW's current licensee, walking backwards.

  1. W0COUcancelled· G
    WATTS, JASON WIAgranted 2013-02-09cancelled 2014-11-04
  2. WB0CIDcancelled· G
    WATTS, JASON WMOgranted 2010-01-29cancelled 2013-02-09
  3. WA0OTMcancelled· G
    WATTS, JASON WIAgranted 2009-12-11cancelled 2010-01-29
  4. KB0KGHcancelled· G
    WATTS, JASON WIAgranted 2002-09-24cancelled 2009-12-11

Successor callsigns

Callsigns held now by people who previously held K0JWW.

  1. K0ATGcancelled· T
    WINCHESTER, JAMES WCOgranted 2002-09-21cancelled 2004-03-10

All historical holders

Every license row we've seen with the callsign K0JWW, oldest first.

  • WINCHESTER, JAMES W CO
    2002-07-20 → cancelled 2002-09-21
  • WATTS, JASON W IA
    2024-10-16 active
← Back to K0JWW License history →