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

NM4S callsign genealogy

Currently held by SOPRANO, MARTIN B

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 NM4S's current licensee, walking backwards.

  1. WE4MSactive· E
    SUTTLES III, WADIE ETNgranted 2025-03-21
  2. K4ELYcancelled· E
    SUTTLES III, WADIE ETNgranted 2013-09-17cancelled 2015-04-24
  3. KK4THIcancelled· T
    Suttles III, Wadie ETNgranted 2013-08-16cancelled 2013-09-17

Successor callsigns

Callsigns held now by people who previously held NM4S.

  1. WE4MScancelled· E
    SOPRANO, MARTIN BALgranted 2007-07-31cancelled 2007-11-09

All historical holders

Every license row we've seen with the callsign NM4S, oldest first.

  • SOPRANO, MARTIN B AL
    2006-09-20 → cancelled 2007-07-31
  • SOPRANO, MARTIN B AL
    2017-08-19 active
← Back to NM4S License history →