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

KC1OSU

Cancelled

Breau, William S

Location: North Haven, CT
Class: General
Granted: 2021-02-19
Expires: 2031-02-19
FRN: 0030549760

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Vanity availability

Available

Available now

KC1OSU cleared its 2-year hold on 2024-01-15. Eligible for vanity application.

Last held by Breau, William S (CT).

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

WA1ZCMactive· G
Breau, William SNCgranted 2022-01-15

License history

0 events

No recorded events.

More vanity slots coming available

From Connecticut

All →

KC1VGT 2026-09-10
KD0TBC 2026-09-10
N1DWY 2026-09-12
W1BEK 2026-09-13
KB1ITJ 2026-09-15

Starting with KC1

All →

KC1SDV MA · 2026-09-10
KC1VGT CT · 2026-09-10
KC1UNR NH · 2026-09-13
KC1VEC ME · 2026-09-17
KC1VEL CT · 2026-09-17

Full history → Vanity availability → Callsign genealogy →