Confidence: Medium · Source: FCC ULS · As of 2026-09-12

K4COS

Cancelled

Perry, Kenneth R

Location: Colorado Springs, CO
Class: General
Granted: 2020-08-18
Expires: 2030-11-06
Previous call: KJ4VWT
FRN: 0019941483

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Vanity availability

Available

Available now

K4COS cleared its 2-year hold on 2026-03-23. Eligible for vanity application.

Last held by Perry, Kenneth R (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 →

Previously held by current licensee

KJ4VWTcancelled· G
PERRY, KENNETH RGAgranted 2010-06-17cancelled 2010-11-06

Prior holders later became

K4YZJactive· G
Perry, Kenneth RCOgranted 2024-03-23
W2KCKexpired· G
VRIESENGA, THOMASFLgranted 1996-07-17cancelled 2008-07-18

License history

0 events

No recorded events.

More vanity slots coming available

From Colorado

All →

KD0TCK 2026-09-13
KD0TCN 2026-09-13
KF0RLS 2026-09-13
KF0INO 2026-09-14
KC0OBZ 2026-09-16

Starting with K4

All →

K4KLP TN · 2026-09-13
K4OTU KY · 2026-09-14
K4MBH TN · 2026-09-16
K4THL FL · 2026-09-16
K4PTK TN · 2026-09-20

Full history → Vanity availability → Callsign genealogy →