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Confidence: Medium · Source: FCC ULS · As of 2026-09-10

NK4US

Cancelled

KAEFF JR, CHARLES N

Location
COVINGTON, KY
Class
Amateur Extra
Granted
2015-12-04
Expires
2025-12-04
Previous call
W4EFB
FRN
0002659795
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Vanity availability

Available

Available now

NK4US cleared its 2-year hold on 2018-02-16. Eligible for vanity application.

Last held by KAEFF JR, CHARLES N (KY).

Confidence: High

Cancelled licenses begin the 2-year hold immediately, so this date is the firm release date per §97.19. Already past — fileable subject to FCC verification.

Callsign genealogy

Full chain →

Previously held by current licensee

  1. W4EFBcancelled· E
    KAEFF JR, CHARLES NKYgranted 2021-12-03cancelled 2022-04-01
  2. KY4GVcancelled· E
    KAEFF JR, CHARLES NKYgranted 2020-02-28cancelled 2021-12-03
  3. WA4HCCcancelled· E
    KAEFF JR, CHARLES NKYgranted 2022-04-01cancelled 2023-05-02

Prior holders later became

  1. W4EFBcancelled· E
    KAEFF JR, CHARLES NKYgranted 2016-02-17cancelled 2016-03-08

License history

0 events

No recorded events.

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From Kentucky

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