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

WA1CFS callsign genealogy

Currently held by HAMM III, JOHN J

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 WA1CFS's current licensee, walking backwards.

  1. N1REUcancelled· E
    HAMM III, JOHN JCAgranted 2011-10-18cancelled 2021-02-02
  2. KJ6RAQcancelled· G
    HAMM III, JOHN JCAgranted 2006-08-18cancelled 2011-10-18

Successor callsigns

Callsigns held now by people who previously held WA1CFS.

  1. KJ6RAQcancelled· G
    HAMM III, JOHN JCAgranted 2006-08-18cancelled 2011-10-18
← Back to WA1CFS License history →