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

KK4D

Active

Sheffield Sr, Darrell L

Location: Millington, TN
Class: Amateur Extra
Granted: 2025-02-15
Expires: 2035-02-15
Previous call: KE4DHF
FRN: 0008766396

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Vanity availability

Held

Currently held

KK4D is held by an active license; it isn't a vanity slot right now.

Vanity availability dates are computed from FCC §97.19's hold periods: 2 years from the cancellation date for cancelled or terminated licenses, 4 years from the expiration date for expired licenses (2-year renewal grace + 2-year hold).

Callsign genealogy

Full chain →

Previously held by current licensee

KE4DHFcancelled· E
Sheffield Sr, Darrell LTNgranted 2003-07-09cancelled 2005-02-05

License history

0 events

No recorded events.

More vanity slots coming available

From Tennessee

All →

KG4TWC 2026-09-10
KK4LNE 2026-09-10
KK4LNK 2026-09-10
KQ4TPH 2026-09-10
KQ4UUA 2026-09-10

Starting with KK4

All →

KK4LMC VA · 2026-09-09
KK4LMD CA · 2026-09-09
KK4LMF VA · 2026-09-09
KK4LMJ KY · 2026-09-09
KK4LMR FL · 2026-09-09

Full history → Vanity availability → Callsign genealogy →