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

AF6ZW callsign genealogy

Currently held by O' Brien, John F

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 AF6ZW's current licensee, walking backwards.

  1. KJ6KDVcancelled· E
    O' Brien, John FCAgranted 2010-08-20cancelled 2010-10-13

Successor callsigns

Callsigns held now by people who previously held AF6ZW.

  1. K6JFOactive· E
    O'Brien, John FCAgranted 2020-11-25
← Back to AF6ZW License history →