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

K0SY callsign genealogy

Currently held by Jones, Martin A

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 K0SY's current licensee, walking backwards.

  1. KC0ECLcancelled· E
    Jones, Martin ANEgranted 2008-07-09cancelled 2008-08-23

Successor callsigns

Callsigns held now by people who previously held K0SY.

  1. W4IFGcancelled· E
    MOSKOWITZ, SEYMOUR AALgranted 2006-08-04cancelled 2010-09-18

All historical holders

Every license row we've seen with the callsign K0SY, oldest first.

  • MOSKOWITZ, SEYMOUR A AL
    2000-05-09 → cancelled 2006-08-04
  • Jones, Martin A NE
    2018-08-07 active
← Back to K0SY License history →