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

KS0O callsign genealogy

Currently held by HARRINGTON, CARLTON J

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 KS0O's current licensee, walking backwards.

  1. KD0PUcancelled· E
    SWISHER, KENNETH LMOgranted 2010-09-14cancelled 2011-06-24
  2. WB0ZAE
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held KS0O.

  1. W9CCCactive· E
    HARRINGTON, CARLTON JMTgranted 2023-03-14
  2. KF7Yactive· E
    Bear, Carlton LORgranted 2019-03-14

All historical holders

Every license row we've seen with the callsign KS0O, oldest first.

  • HARRINGTON, CARLTON J PR
    1997-03-26 → cancelled 2003-05-31
  • Bear, Carlton L WA
    2007-03-27 → cancelled 2009-06-02
  • SWISHER, KENNETH L MO
    2021-04-28 active
← Back to KS0O License history →