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

KW4BI callsign genealogy

Currently held by DETRES, LUIS O

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 KW4BI's current licensee, walking backwards.

  1. KM4DZXcancelled· E
    DETRES, LUIS OFLgranted 2014-09-02cancelled 2014-09-11

Successor callsigns

Callsigns held now by people who previously held KW4BI.

  1. W4LODactive· E
    DETRES, LUIS OFLgranted 2014-09-30
← Back to KW4BI License history →