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

N4FDX callsign genealogy

Currently held by MILLS, DONALD L

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 N4FDX's current licensee, walking backwards.

  1. K4RYYcancelled· T
    MILLS, DONALD LTNgranted 2002-03-07cancelled 2010-03-19
  2. KE4TNKcancelled· T
    MILLS, DONALD LKYgranted 1994-12-12cancelled 2002-03-07

Successor callsigns

Callsigns held now by people who previously held N4FDX.

No current licensee on record previously held this callsign.

← Back to N4FDX License history →