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

K9MHZ callsign genealogy

Currently held by NELSON, CLYDE M

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 K9MHZ's current licensee, walking backwards.

  1. AB9PZcancelled· E
    Knapp, Bradley JINgranted 2001-03-28cancelled 2008-03-28
  2. N6KYSexpired· T
    Boyer, Kris LCAgranted 2011-03-08cancelled 2023-03-09
  3. KJ6MSDcancelled· T
    Herstein, Kris LCAgranted 2011-02-17cancelled 2011-03-08

Successor callsigns

Callsigns held now by people who previously held K9MHZ.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K9MHZ, oldest first.

  • NELSON, CLYDE M WI
    1994-08-17 → cancelled 2006-08-18
  • Knapp, Bradley J IN
    2018-01-05 active
← Back to K9MHZ License history →