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

W4SGU callsign genealogy

Currently held by PASSONS, THOMAS L

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 W4SGU's current licensee, walking backwards.

  1. AA8QR
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held W4SGU.

No current licensee on record previously held this callsign.

← Back to W4SGU License history →