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

KM4JDK

Cancelled

HELM, MATTHEW S

Location: MULBERRY, FL
Class: General
Granted: 2015-03-24
Expires: 2025-03-24
FRN: 0024450363

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Vanity availability

Available

Available now

KM4JDK cleared its 2-year hold on 2017-10-15. Eligible for vanity application.

Last held by HELM, MATTHEW S (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

N9XMTactive· G
HELM, MATTHEW SFLgranted 2025-07-29

License history

0 events

No recorded events.

More vanity slots coming available

From Florida

All →

K4CYG 2026-09-10
K4YDD 2026-09-10
KG4QXI 2026-09-10
KG4RVV 2026-09-10
KG4VAB 2026-09-10

Starting with KM4

All →

KM4AHK PA · 2026-09-21
KM4JCT GA · 2026-09-28
KM4FBY SC · 2026-10-01
KM4IS NC · 2026-10-03
KM4NGF AL · 2026-10-07

Full history → Vanity availability → Callsign genealogy →