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

K0BE callsign genealogy

Currently held by Heimerl, Donald A

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 K0BE's current licensee, walking backwards.

  1. W0BJEactive· T
    Ehlers, Brian JIAgranted 2021-07-20
  2. KF0DSKcancelled· T
    Ehlers, Brian JIAgranted 2021-02-09cancelled 2021-07-20

Successor callsigns

Callsigns held now by people who previously held K0BE.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K0BE, oldest first.

  • OLSON, ROBERT T MN
    1997-05-19 → cancelled 2003-12-30
  • Heimerl, Donald A MN
    2007-04-07 → cancelled 2019-04-09
  • Evans, Barbara J CO
    2019-04-26 active
← Back to K0BE License history →