Confidence: Medium · Source: FCC ULS · As of 2026-09-11

KK4CDI

Cancelled

Calvin, William D

Location: Fort Walton Beach, FL
Class: Amateur Extra
Granted: 2011-05-18
Expires: 2021-05-18
FRN: 0020869012

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Vanity availability

Available

Available now

KK4CDI cleared its 2-year hold on 2014-09-12. Eligible for vanity application.

Last held by Calvin, William D (FL).

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 →

Prior holders later became

AK4YBactive· E
Calvin, William DFLgranted 2021-02-25

License history

0 events

No recorded events.

More vanity slots coming available

From Florida

All →

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Starting with KK4

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KK4LNP TN · 2026-09-11
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KK4LNV TN · 2026-09-11
KK4LOA FL · 2026-09-11

Full history → Vanity availability → Callsign genealogy →