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

K4MOP

Cancelled

Hacker, Leonard D

Location: Jacksonville, FL
Class: Amateur Extra
Granted: 2016-02-13
Expires: 2026-02-13
Previous call: KK4WHB
FRN: 0023237167

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Vanity availability

Available

Available now

K4MOP cleared its 2-year hold on 2018-11-21. Eligible for vanity application.

Last held by Hacker, Leonard 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 →

Previously held by current licensee

KK4WHBcancelled· G
Hacker, Leonard DFLgranted 2014-01-09cancelled 2016-02-13

Prior holders later became

KW4ZOcancelled· E
Hacker, Leonard DGAgranted 2016-02-13cancelled 2017-02-28

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 K4

All →

K4CYG FL · 2026-09-10
K4LWW NC · 2026-09-10
K4ONS NC · 2026-09-10
K4YDD FL · 2026-09-10
K4KLP TN · 2026-09-13

Full history → Vanity availability → Callsign genealogy →