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

KC1SA callsign genealogy

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 KC1SA's current licensee, walking backwards.

  1. KC1AXJcancelled· E
    Allen, Stephen MCTgranted 2013-12-11cancelled 2016-04-12

Successor callsigns

Callsigns held now by people who previously held KC1SA.

  1. KC0SAactive· E
    Allen, Walter SMOgranted 2023-10-24
  2. KK7OZcancelled· E
    HANSON, DOUGLAS JVAgranted 2008-05-08cancelled 2017-04-14

All historical holders

Every license row we've seen with the callsign KC1SA, oldest first.

  • Allen, Walter S MO
    2013-05-25 → cancelled 2013-07-30
  • Allen, Stephen M CT
    2026-01-14 active
  • —
    — → cancelled 1998-07-30
← Back to KC1SA License history →