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

N1ATM callsign genealogy

Currently held by Crowley, Richard

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 N1ATM's current licensee, walking backwards.

  1. KB1Hactive· E
    Castleberry, Gary WMEgranted 2021-04-02
  2. KC1MTLcancelled· E
    Castleberry, Gary WMEgranted 2020-03-04cancelled 2021-04-02

Successor callsigns

Callsigns held now by people who previously held N1ATM.

  1. KB1Hcancelled· E
    Crowley, RichardMAgranted 2017-04-14cancelled 2019-03-12

All historical holders

Every license row we've seen with the callsign N1ATM, oldest first.

  • Crowley, Richard MA
    2013-06-15 → cancelled 2017-04-14
  • Crowley, Richard MA
    2019-03-12 active
← Back to N1ATM License history →