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

N9CM callsign genealogy

Currently held by McGuire, Carroll 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 N9CM's current licensee, walking backwards.

  1. KD9NDFcancelled· E
    McGuire, Carroll JILgranted 2019-05-07cancelled 2021-12-28

Successor callsigns

Callsigns held now by people who previously held N9CM.

  1. W0XXcancelled· E
    Hays, Christopher BTXgranted 2019-12-06cancelled 2020-03-14
  2. W0XXcancelled· E
    Hays, Christopher BTXgranted 2019-01-01cancelled 2019-02-16
  3. W0AKRcancelled· E
    Hays, Christopher BTXgranted 2017-06-24cancelled 2017-07-25

All historical holders

Every license row we've seen with the callsign N9CM, oldest first.

  • MARSHALL, CHARLES E WI
    1997-11-24 → cancelled 2009-11-25
  • KLEIN, RICHARD M FL
    2009-12-29 → cancelled 2014-09-19
  • Hays, Christopher B TX
    2016-10-08 → cancelled 2017-06-24
  • Hays, Christopher B TX
    2018-11-14 → cancelled 2019-01-01
  • Hays, Christopher B TX
    2019-09-24 → cancelled 2019-12-06
  • McGuire, Carroll J IL
    2021-12-28 active
← Back to N9CM License history →