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

K4NIO

Cancelled

HOLCOMB, WILLIAM H

Location: LARGO, FL
Class: Amateur Extra
Granted: 2000-06-09
Expires: 2010-06-09
Previous call: KC4YTP
FRN: 0002957272

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Vanity availability

Available

Available now

K4NIO cleared its 2-year hold on 2011-09-29. Eligible for vanity application.

Last held by HOLCOMB, WILLIAM H (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 →

Previously held by current licensee

KC4YTPcancelled· G
HOLCOMB, WILLIAM HFLgranted 1996-08-14cancelled 2000-06-09

Prior holders later became

KN4IOexpired· E
HOLCOMB, WILLIAM HFLgranted 2009-09-29cancelled 2021-09-30

License history

0 events

No recorded events.

More vanity slots coming available

From Florida

All →

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Starting with K4

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K4PTK TN · 2026-09-20
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Full history → Vanity availability → Callsign genealogy →