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

KC4M callsign genealogy

Currently held by GRUGAL, GARTH 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 KC4M's current licensee, walking backwards.

  1. N4EIIcancelled· E
    SUTTON JR, AL JNCgranted 2017-07-04cancelled 2024-05-21
  2. KN4DRLcancelled· G
    SUTTON JR, AL JNCgranted 2017-06-01cancelled 2017-07-04

Successor callsigns

Callsigns held now by people who previously held KC4M.

  1. KC7UScancelled· E
    GRUGAL, GARTH MNVgranted 2022-04-30cancelled 2022-11-22

All historical holders

Every license row we've seen with the callsign KC4M, oldest first.

  • Early Jr, Harry V GA
    2006-02-07 → cancelled 2015-07-27
  • GRUGAL, GARTH M NV
    2017-08-15 → cancelled 2022-04-30
  • SUTTON JR, AL J NC
    2024-05-21 active
← Back to KC4M License history →