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

KF0W

Active

Patin, Sidney L

Location: Colorado Springs, CO
Class: Amateur Extra
Granted: 2026-04-02
Expires: 2036-06-27
Previous call: KC0OSB
FRN: 0008123069

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Vanity availability

Held

Currently held

KF0W is held by an active license; it isn't a vanity slot right now.

Vanity availability dates are computed from FCC §97.19's hold periods: 2 years from the cancellation date for cancelled or terminated licenses, 4 years from the expiration date for expired licenses (2-year renewal grace + 2-year hold).

Callsign genealogy

Full chain →

Previously held by current licensee

KC0OSBcancelled· E
Patin, Sidney LCOgranted 2002-12-20cancelled 2006-06-27

Prior holders later became

W0WCAactive· E
ALLEN JR, WILLIAM CCOgranted 2021-12-23

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 KF0

All →

KF0RME CO · 2026-09-10
KF0RLS CO · 2026-09-13
KF0INO CO · 2026-09-14
KF0KSQ ND · 2026-09-17
KF0NVL MO · 2026-09-17

Full history → Vanity availability → Callsign genealogy →