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

W9CM callsign genealogy

Currently held by Mc Guyer, Clifford C

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 W9CM's current licensee, walking backwards.

  1. KZ4XGcancelled· E
    Randall Jr, Kenneth RNCgranted 2025-08-19cancelled 2025-12-12
  2. KR4GGAcancelled· E
    Randall Jr, Kenneth RNCgranted 2025-08-19cancelled 2025-11-19

Successor callsigns

Callsigns held now by people who previously held W9CM.

  1. WC7Uactive· E
    MAYER, CHAD EORgranted 2023-11-21

All historical holders

Every license row we've seen with the callsign W9CM, oldest first.

  • Mc Guyer, Clifford C IN
    2006-02-16 → cancelled 2015-01-28
  • MAYER, CHAD E OR
    2017-02-17 → cancelled 2023-11-21
  • Randall Jr, Kenneth R NC
    2025-12-12 active
← Back to W9CM License history →