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

K7CMM callsign genealogy

Currently held by Wily, Robert M

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 K7CMM's current licensee, walking backwards.

  1. KD4CMMcancelled· E
    Wily, Robert MUTgranted 2014-11-25cancelled 2015-03-10
  2. K1RMWactive· G
    WORKMAN, RYAN MNHgranted 2017-02-10
  3. KB2OOPcancelled· T
    WORKMAN, RYAN MNHgranted 2012-08-08cancelled 2017-02-10

Successor callsigns

Callsigns held now by people who previously held K7CMM.

  1. K7KGBcancelled· G
    KRUGER, A JAZgranted 2010-01-27cancelled 2010-03-06

All historical holders

Every license row we've seen with the callsign K7CMM, oldest first.

  • Wily, Robert M UT
    2025-02-28 active
  • KRUGER, A J
    — → cancelled 1998-07-22
← Back to K7CMM License history →