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

KA1CZ callsign genealogy

Currently held by Czerwinski, David 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 KA1CZ's current licensee, walking backwards.

  1. KB1GOZcancelled· E
    Czerwinski, David PCTgranted 2011-03-23cancelled 2011-04-19
  2. KA1YQUcancelled· G
    Czerwinski, David PCTgranted 1997-06-06cancelled 2001-04-04

Successor callsigns

Callsigns held now by people who previously held KA1CZ.

No current licensee on record previously held this callsign.

← Back to KA1CZ License history →