uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-14

NU4J callsign genealogy

Currently held by 41ST AVE CONTEST GROUP

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 NU4J's current licensee, walking backwards.

  1. N9FZcancelled· E
    Whelchel, Cainan MGAgranted 2024-02-06cancelled 2026-08-29
  2. KQ4DAPcancelled· E
    Whelchel, Cainan MGAgranted 2022-09-07cancelled 2024-02-06

Successor callsigns

Callsigns held now by people who previously held NU4J.

  1. NN4Nactive
    41ST AVE CONTEST GROUPFLgranted 2024-06-01

All historical holders

Every license row we've seen with the callsign NU4J, oldest first.

  • CHANCE, GEORGE R AZ
    1998-10-26 → cancelled 2002-03-14
  • 41ST AVE CONTEST GROUP FL
    2002-06-22 → cancelled 2002-07-22
  • CLINTON, HARRY W KY
    2014-05-31 → cancelled 2026-08-13
  • Whelchel, Cainan M GA
    2026-08-29 active
← Back to NU4J License history →