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

K4MSM callsign genealogy

Currently held by COXEY JR, CHARLES N

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 K4MSM's current licensee, walking backwards.

  1. KQ4IVVcancelled· T
    Mercer, Matthew SNCgranted 2023-05-31cancelled 2023-07-14

Successor callsigns

Callsigns held now by people who previously held K4MSM.

  1. K4TTJactive· E
    COXEY JR, CHARLES NTNgranted 2019-02-26
  2. K4TTJcancelled· E
    COXEY JR, CHARLES NTNgranted 2009-03-17cancelled 2009-07-21
  3. K4NVHcancelled· E
    MORRIS, RALPH DGAgranted 1998-11-06cancelled 2001-03-20

All historical holders

Every license row we've seen with the callsign K4MSM, oldest first.

  • COXEY JR, CHARLES N TN
    2003-03-11 → cancelled 2009-03-17
  • COXEY JR, CHARLES N TN
    2009-07-21 → cancelled 2019-02-26
  • Mercer, Matthew S NC
    2023-07-14 active
  • MORRIS, RALPH D
    — → cancelled 1998-11-06
← Back to K4MSM License history →