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

KM4SS callsign genealogy

Currently held by Stradtman Jr, Earl W

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 KM4SS's current licensee, walking backwards.

  1. KM4SSScancelled· E
    Stradtman Jr, Earl WALgranted 2016-01-29cancelled 2018-09-07
  2. KM4PCTcancelled· T
    Stradtman Jr, Earl WALgranted 2015-11-23cancelled 2016-01-29

Successor callsigns

Callsigns held now by people who previously held KM4SS.

  1. AB4QTexpired· E
    BRUNN, ROBERT JNCgranted 1990-10-02cancelled 2002-10-03
← Back to KM4SS License history →