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

N4DXX callsign genealogy

Currently held by JOHNSTON III, ROBERT F

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 N4DXX's current licensee, walking backwards.

  1. KY4HTJcancelled· G
    JUDE, HOWARD TKYgranted 2006-04-18cancelled 2009-04-03
  2. KG4IZOcancelled· G
    Jude, Howard TGAgranted 2000-08-11cancelled 2006-04-18
  3. KF4KJMcancelled· G
    JUDE, HOWARD TKYgranted 1998-04-28cancelled 2000-08-11

Successor callsigns

Callsigns held now by people who previously held N4DXX.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign N4DXX, oldest first.

  • JOHNSTON III, ROBERT F GA
    1996-07-30 → cancelled 2008-07-31
  • JUDE, HOWARD T KY
    2019-08-20 active
← Back to N4DXX License history →