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

NX4J callsign genealogy

Currently held by WOODSTOCK, 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 NX4J's current licensee, walking backwards.

  1. N4KVRcancelled· E
    HARMON, ROBERT ANCgranted 1997-01-21cancelled 2000-05-16

Successor callsigns

Callsigns held now by people who previously held NX4J.

  1. W4JRWactive· E
    WOODSTOCK, JOHN RGAgranted 2017-10-24

All historical holders

Every license row we've seen with the callsign NX4J, oldest first.

  • HARMON, ROBERT A NC
    2020-03-04 active
  • WOODSTOCK, JOHN R
    — → cancelled 1998-01-14
← Back to NX4J License history →