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

KK4RFZ

Cancelled

GRAEBER JR, WILLIAM M

Location: Salida, CO
Class: Amateur Extra
Granted: 2023-04-04
Expires: 2033-05-16
FRN: 0022704993

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Vanity availability

Available

Available now

KK4RFZ cleared its 2-year hold on 2025-08-28. Eligible for vanity application.

Last held by GRAEBER JR, WILLIAM M (CO).

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

WM2Gactive· E
GRAEBER JR, WILLIAM MCOgranted 2023-08-29

License history

0 events

No recorded events.

More vanity slots coming available

From Colorado

All →

K0RTS 2026-09-09
K7UGT 2026-09-09
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KB7PWB 2026-09-10
KF0RME 2026-09-10

Starting with KK4

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Full history → Vanity availability → Callsign genealogy →