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

W9MN callsign genealogy

Currently held by Nelson, Mark S

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 W9MN's current licensee, walking backwards.

  1. K4YSNcancelled· E
    Maseda, MichaelFLgranted 2021-03-13cancelled 2021-04-30
  2. KO4MZZcancelled· E
    Maseda, MichaelFLgranted 2021-02-23cancelled 2021-03-13

Successor callsigns

Callsigns held now by people who previously held W9MN.

  1. W0WSactive· E
    Nelson, Mark SCOgranted 2019-04-09

All historical holders

Every license row we've seen with the callsign W9MN, oldest first.

  • GORMLEY, CLAUDE E IN
    2006-09-13 → cancelled 2018-12-11
  • Nelson, Mark S CO
    2018-12-29 → cancelled 2019-04-09
  • Maseda, Michael V WI
    2021-04-30 active
← Back to W9MN License history →