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

KO5SA

Cancelled

KOSA, ROBERT A

Location: CYPRESS, TX
Class: Amateur Extra
Granted: 2000-02-29
Expires: 2010-02-28
Previous call: N5LCO
FRN: 0003281953

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Vanity availability

Available

Available now

KO5SA cleared its 2-year hold on 2011-01-16. Eligible for vanity application.

Last held by KOSA, ROBERT A (TX).

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

N5LCOcancelled· A
KOSA, ROBERT ATXgranted 1993-03-02cancelled 2000-02-29
KB5DFY
no FCC ULS record on file

Prior holders later became

KO5Aactive· E
KOSA, ROBERT ATXgranted 2018-10-27

License history

0 events

No recorded events.

More vanity slots coming available

From Texas

All →

K2UMA 2026-09-10
K9CWO 2026-09-10
KB5SLO 2026-09-10
KD5C 2026-09-10
KD5TUE 2026-09-10

Starting with KO5

All →

KO5USA TX · 2028-03-09
KO5MS TX · 2028-06-24

Full history → Vanity availability → Callsign genealogy →