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

W4FW callsign genealogy

Currently held by BUTLER, ROBERT 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 W4FW's current licensee, walking backwards.

  1. K4FWRexpired· T
    Ryba, Frank WFLgranted 2012-01-31cancelled 2024-02-01
  2. KK4FZZcancelled· T
    Ryba, Frank WFLgranted 2012-01-09cancelled 2012-01-31

Successor callsigns

Callsigns held now by people who previously held W4FW.

No current licensee on record previously held this callsign.

← Back to W4FW License history →