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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

W5GZU callsign genealogy

Currently held by GAMMON, JOHN T

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 W5GZU's current licensee, walking backwards.

  1. KI5SZ
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held W5GZU.

No current licensee on record previously held this callsign.

← Back to W5GZU License history →