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

N9EM callsign genealogy

Currently held by WILLIAMSON, THEODORE L

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 N9EM's current licensee, walking backwards.

  1. W9EEDactive· G
    Magill, George AINgranted 2020-03-31
  2. KD9BMIcancelled· G
    Magill, George AINgranted 2014-06-16cancelled 2020-03-31

Successor callsigns

Callsigns held now by people who previously held N9EM.

  1. K5TEDcancelled· E
    WILLIAMSON, THEODORE LILgranted 2008-02-29cancelled 2010-03-12
  2. K5TEDcancelled· E
    WILLIAMSON, THEODORE LILgranted 2003-11-15cancelled 2006-01-07
  3. K5TEDcancelled· E
    WILLIAMSON, THEODORE LILgranted 1999-03-17cancelled 1999-11-13

All historical holders

Every license row we've seen with the callsign N9EM, oldest first.

  • WILLIAMSON, THEODORE L IL
    1999-11-13 → cancelled 2003-11-15
  • WILLIAMSON, THEODORE L IL
    2006-01-07 → cancelled 2008-02-29
  • WILLIAMSON, THEODORE L IL
    2010-03-12 → cancelled 2010-10-11
  • Purnell, John E WI
    2023-01-04 active
  • WILLIAMSON, THEODORE L IL
    — → cancelled 1999-03-17
← Back to N9EM License history →