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

AC4CK

Cancelled

YOST, DENNIS A

Location: Barrington, IL
Class: Amateur Extra
Granted: 2012-04-11
Expires: 2022-06-16
FRN: 0003932548

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Vanity availability

Available

Available now

AC4CK cleared its 2-year hold on 2023-04-13. Eligible for vanity application.

Last held by YOST, DENNIS A (IL).

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

AE9AEcancelled· E
YOST, DENNIS AILgranted 2021-04-13cancelled 2021-11-27

License history

0 events

No recorded events.

More vanity slots coming available

From Illinois

All →

K9CYV 2026-09-10
KC9WOC 2026-09-10
KD9YXS 2026-09-10
KE9BGG 2026-09-10
KC9CJI 2026-09-11

Starting with AC4

All →

AC4VP FL · 2026-09-14
AC4UX CA · 2026-09-16
AC4SQ GA · 2026-09-19
AC4ZY TN · 2026-09-21
AC4FX TN · 2026-10-23

Full history → Vanity availability → Callsign genealogy →