uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-12

WJ4X callsign genealogy

Currently held by SWANSON, ANDREW G

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 WJ4X's current licensee, walking backwards.

  1. AJ4LRcancelled· E
    Shirley, Adam HSCgranted 2007-06-21cancelled 2008-11-07
  2. KI4WQDcancelled· E
    Shirley, Adam HSCgranted 2007-06-21cancelled 2008-10-14

Successor callsigns

Callsigns held now by people who previously held WJ4X.

  1. N4VRcancelled· E
    YACKABOSKIE, RICHARD ETXgranted 2016-08-13cancelled 2024-11-23
  2. AI4JTcancelled· E
    YACKABOSKIE, RICHARD EFLgranted 2003-04-08cancelled 2005-04-09

All historical holders

Every license row we've seen with the callsign WJ4X, oldest first.

  • SWANSON, ANDREW G VA
    1997-09-29 → cancelled 2001-03-19
  • YACKABOSKIE, RICHARD E FL
    2003-04-08 → cancelled 2005-03-26
  • YACKABOSKIE, RICHARD E FL
    2005-06-14 → cancelled 2006-10-11
  • Shirley, Adam H SC
    2018-09-19 active
← Back to WJ4X License history →