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

N6COW callsign genealogy

Currently held by SZYMANSKI, MARTIN P

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 N6COW's current licensee, walking backwards.

  1. W7RUcancelled· E
    SZYMANSKI, MARTIN PCAgranted 2018-07-30cancelled 2025-06-17
  2. N6FZPcancelled· E
    SZYMANSKI, MARTIN Pcancelled 1998-10-27

Successor callsigns

Callsigns held now by people who previously held N6COW.

  1. KJ6VKexpired· A
    KROES, JOHN FCAgranted 1989-06-06cancelled 2001-06-07
← Back to N6COW License history →