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

W4XTZ callsign genealogy

Currently held by CARMICHAEL, JOHN R

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 W4XTZ's current licensee, walking backwards.

  1. K4KGKcancelled· G
    HARRIS, GREGORY MGAgranted 2007-06-16cancelled 2010-12-07
  2. KI4QDJcancelled· G
    HARRIS, GREGORY MGAgranted 2006-07-10cancelled 2007-06-16

Successor callsigns

Callsigns held now by people who previously held W4XTZ.

  1. K4AOexpired· E
    CARMICHAEL, JOHN RTNgranted 2008-10-21cancelled 2020-10-22

All historical holders

Every license row we've seen with the callsign W4XTZ, oldest first.

  • CARMICHAEL, JOHN R TN
    2006-05-23 → cancelled 2008-10-21
  • HARRIS, GREGORY M GA
    2020-09-09 active
← Back to W4XTZ License history →