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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

KM4CK callsign genealogy

Currently held by Goodstein, Mack

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 KM4CK's current licensee, walking backwards.

  1. K2MGGcancelled· E
    Goodstein, MackNYgranted 2012-12-04cancelled 2019-11-02
  2. KD2CZVcancelled· T
    Goodstein, MackNYgranted 2012-11-09cancelled 2012-12-04

Successor callsigns

Callsigns held now by people who previously held KM4CK.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign KM4CK, oldest first.

  • PEARCE, GODFREY R KY
    1988-06-07 → cancelled 2000-06-09
  • Goodstein, Mack CO
    2019-11-02 active
← Back to KM4CK License history →