Confidence: Medium · Source: FCC ULS · As of 2026-09-10

KO4HWA

Cancelled

Castillo, Stephen L

Location: Florence, KY
Class: General
Granted: 2020-09-28
Expires: 2030-09-28
FRN: 0021319785

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Vanity availability

Available

Available now

KO4HWA cleared its 2-year hold on 2022-10-16. Eligible for vanity application.

Last held by Castillo, Stephen L (KY).

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

W4VVEactive· G
Castillo, Stephen LKYgranted 2020-10-16

License history

0 events

No recorded events.

More vanity slots coming available

From Kentucky

All →

KG4VAS 2026-09-11
KG4VAT 2026-09-11
K4OTU 2026-09-14
KD4SWM 2026-09-14
KD4SWN 2026-09-14

Starting with KO4

All →

KO4UTL FL · 2026-09-13
KO4PTL KY · 2026-09-17
KO4OSB VA · 2026-09-21
KO4TMC FL · 2026-09-21
KO4YVJ FL · 2026-09-24

Full history → Vanity availability → Callsign genealogy →