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

N1JX callsign genealogy

Currently held by KNADLE, ARNOLD J

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 N1JX's current licensee, walking backwards.

  1. K5FLLcancelled· E
    LACZKO, FRANKWAgranted 2019-03-19cancelled 2019-04-16
  2. KJ7EIIcancelled· G
    LACZKO, FRANK LWAgranted 2019-02-27cancelled 2019-03-19

Successor callsigns

Callsigns held now by people who previously held N1JX.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign N1JX, oldest first.

  • KNADLE, ARNOLD J NJ
    2007-02-10 → cancelled 2019-03-28
  • LACZKO, FRANK L WA
    2019-04-16 active
← Back to N1JX License history →