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

NM1Z callsign genealogy

Currently held by GUNTHER, ROBERT J

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 NM1Z's current licensee, walking backwards.

  1. W9PJGcancelled· E
    Gaffney, Paul JMAgranted 2022-05-24cancelled 2024-09-21
  2. KD9UYTcancelled· T
    Gaffney, Paul JWIgranted 2022-05-04cancelled 2022-05-24

Successor callsigns

Callsigns held now by people who previously held NM1Z.

  1. NN1AAactive
    The Morse ContestersMAgranted 2019-10-23
  2. K1OGcancelled· E
    OGREN, CHRISTOPHER RNHgranted 2011-05-04cancelled 2011-05-24

All historical holders

Every license row we've seen with the callsign NM1Z, oldest first.

  • OGREN, CHRISTOPHER R MA
    1992-07-28 → cancelled 2001-03-30
  • The Morse Contesters MA
    2005-04-19 → cancelled 2009-12-08
  • GUNTHER, ROBERT J FL
    2012-08-25 → cancelled 2024-08-27
  • Gaffney, Paul J MA
    2024-09-21 active
← Back to NM1Z License history →