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

KF4MKB

Cancelled

MC MASTER, WILLIAM N

Class: General

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Vanity availability

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Available now

KF4MKB cleared its 2-year hold on 2000-10-26. Eligible for vanity application.

Last held by MC MASTER, WILLIAM N.

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

KU4VVcancelled· E
MC MASTER, WILLIAM NNCgranted 1998-10-27cancelled 2004-02-24

License history

0 events

No recorded events.

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Full history → Vanity availability → Callsign genealogy →