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

KC0OSB

Cancelled

Patin, Sidney L

Location: Colorado Springs, CO
Class: Amateur Extra
Granted: 2002-12-20
Expires: 2012-12-20
FRN: 0008123069

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Vanity availability

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KC0OSB cleared its 2-year hold on 2008-06-26. Eligible for vanity application.

Last held by Patin, Sidney L (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

KF0Wactive· E
Patin, Sidney LCOgranted 2026-04-02

License history

0 events

No recorded events.

More vanity slots coming available

From Colorado

All →

K0RTS 2026-09-09
K7UGT 2026-09-09
W0RMH 2026-09-09
KB7PWB 2026-09-10
KF0RME 2026-09-10

Starting with KC0

All →

KC0OBE MN · 2026-09-15
KC0OBK MN · 2026-09-16
KC0OBW AL · 2026-09-16
KC0OBZ CO · 2026-09-16
KC0OCA CO · 2026-09-16

Full history → Vanity availability → Callsign genealogy →