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

KB1O callsign genealogy

Currently held by RICHEME, JEAN B

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 KB1O's current licensee, walking backwards.

  1. AA1RJcancelled· E
    RICHEME, JEAN BCTgranted 2011-09-10cancelled 2016-02-23

Successor callsigns

Callsigns held now by people who previously held KB1O.

  1. NZ7Xcancelled· E
    Dinsmore, Mark PORgranted 2014-03-29cancelled 2015-03-07
  2. AA1RJcancelled· E
    RICHEME, JEAN BCTgranted 2011-09-10cancelled 2016-02-23

All historical holders

Every license row we've seen with the callsign KB1O, oldest first.

  • RICHEME, JEAN B CT
    2002-08-31 → cancelled 2011-09-10
  • Dinsmore, Mark P OR
    2013-11-09 → cancelled 2014-03-29
  • RICHEME, JEAN B CT
    2026-02-20 active
← Back to KB1O License history →