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

W4JKU callsign genealogy

Currently held by SHELDON SR, JOSEPH M

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 W4JKU's current licensee, walking backwards.

  1. N4JKUcancelled· G
    SHELDON SR, JOSEPH MNCgranted 2020-06-16cancelled 2022-02-11
  2. K3CARactive· G
    Israel, Michael APAgranted 2024-09-21
  3. KC3ZNWcancelled· G
    Israel, Michael APAgranted 2024-08-06cancelled 2024-09-21

Successor callsigns

Callsigns held now by people who previously held W4JKU.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign W4JKU, oldest first.

  • WAGER, DAVID D NC
    2009-06-02 → cancelled 2021-06-03
  • SHELDON SR, JOSEPH M NC
    2022-02-11 active
← Back to W4JKU License history →