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

W4RZW callsign genealogy

Currently held by BISHOP, LARRY J

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 W4RZW's current licensee, walking backwards.

  1. KM4NPXcancelled· G
    Caldwell, Benjamin MGAgranted 2014-09-15cancelled 2019-12-13
  2. KM4EFUcancelled· G
    Caldwell, Benjamin MTNgranted 2014-09-15cancelled 2015-10-01

Successor callsigns

Callsigns held now by people who previously held W4RZW.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign W4RZW, oldest first.

  • BISHOP, LARRY J TN
    1995-10-02 → cancelled 2007-10-03
  • Caldwell, Benjamin M GA
    2019-12-13 active
← Back to W4RZW License history →