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

K0BZ callsign genealogy

Currently held by WAMHOFF, JON R

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 K0BZ's current licensee, walking backwards.

  1. WP2Bcancelled· E
    ZUEHLKE, BRADFORD KVIgranted 2019-02-01cancelled 2021-01-26
  2. K9BZactive· E
    FELDSTEIN, JEFFREY BUTgranted 2021-02-02
  3. N6OJUcancelled· E
    FELDSTEIN, JEFFREY BCAgranted 2003-01-03cancelled 2011-04-05
  4. KB6NWE
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held K0BZ.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K0BZ, oldest first.

  • WAMHOFF, JON R CO
    2012-05-09 → cancelled 2019-01-07
  • ZUEHLKE, BRADFORD K WI
    2021-01-26 active
← Back to K0BZ License history →