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

N4MHB callsign genealogy

Currently held by Beringer, Martin H

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 N4MHB's current licensee, walking backwards.

  1. W9MHBcancelled· E
    Beringer, Martin HFLgranted 2008-02-26cancelled 2017-03-31
  2. KC9MTEactive· T
    Ehemann, Michael TWIgranted 2021-02-13
  3. KC9AIQcancelled· T
    Ehemann, Michael TWIgranted 2011-07-26cancelled 2021-02-13

Successor callsigns

Callsigns held now by people who previously held N4MHB.

  1. AI4VTexpired· E
    Lent, Roger STNgranted 2007-03-23cancelled 2019-03-26

All historical holders

Every license row we've seen with the callsign N4MHB, oldest first.

  • Lent, Roger S TN
    1995-04-17 → cancelled 2007-03-23
  • Beringer, Martin H FL
    2017-03-31 active
← Back to N4MHB License history →