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

KB0HAZ callsign genealogy

Currently held by KULLMAN, JOHN C

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 KB0HAZ's current licensee, walking backwards.

  1. K0JCKcancelled· E
    KULLMAN, JOHN CKSgranted 2019-10-18cancelled 2020-02-15

Successor callsigns

Callsigns held now by people who previously held KB0HAZ.

  1. K0JCKcancelled· E
    KULLMAN, JOHN CKSgranted 2019-10-18cancelled 2020-02-15
  2. K0JCKcancelled· E
    KULLMAN, JOHN CKSgranted 2004-02-07cancelled 2012-09-22

All historical holders

Every license row we've seen with the callsign KB0HAZ, oldest first.

  • KULLMAN, JOHN C KS
    2003-09-30 → cancelled 2004-02-07
  • KULLMAN, JOHN C KS
    2012-09-22 → cancelled 2019-10-18
← Back to KB0HAZ License history →