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

W4ACH callsign genealogy

Currently held by RODRIGUEZ, JULIO E

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 W4ACH's current licensee, walking backwards.

  1. KM4ZLNcancelled· G
    Harbour, Corey AVAgranted 2016-12-07cancelled 2025-03-21

Successor callsigns

Callsigns held now by people who previously held W4ACH.

  1. KF4MJMactive· E
    RODRIGUEZ, JULIO EFLgranted 2021-08-10
  2. W4PPCcancelled· G
    RODRIGUEZ, JULIO EFLgranted 2011-11-19cancelled 2011-12-17

All historical holders

Every license row we've seen with the callsign W4ACH, oldest first.

  • HOLDER, ALEX C TN
    1998-01-14 → cancelled 2010-01-15
  • RODRIGUEZ, JULIO E FL
    2011-03-29 → cancelled 2011-11-19
  • RODRIGUEZ, JULIO E FL
    2013-12-24 → cancelled 2021-08-10
  • Harbour, Corey A VA
    2025-03-21 active
← Back to W4ACH License history →