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

KO4OIY

Cancelled

Montelongo, Michael

Location: Hialeah, FL
Class: Technician
Granted: 2021-03-18
Expires: 2031-03-18
FRN: 0030222210

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Vanity availability

Available

Available now

KO4OIY cleared its 2-year hold on 2023-04-06. Eligible for vanity application.

Last held by Montelongo, Michael (FL).

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

K4MTYcancelled· T
Montelongo, MichaelFLgranted 2021-04-06cancelled 2021-06-29

License history

0 events

No recorded events.

More vanity slots coming available

From Florida

All →

KD4SPY 2026-09-11
KK4LOA 2026-09-11
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KO4UTL 2026-09-13
KQ4RHZ 2026-09-13

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 →