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

KO4BYO

Cancelled

Thomas, Douglas S

Location: Wilson, NC
Class: Technician
Granted: 2020-02-18
Expires: 2030-02-18
FRN: 0029203577

Get notified about status changes and vanity availability for this callsign.

Vanity availability

Available

Available now

KO4BYO cleared its 2-year hold on 2022-05-05. Eligible for vanity application.

Last held by Thomas, Douglas S (NC).

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

KA4DSTactive· G
Thomas, Douglas SNCgranted 2020-05-05

License history

0 events

No recorded events.

More vanity slots coming available

From North Carolina

All →

K4LWW 2026-09-10
K4ONS 2026-09-10
KG4TPH 2026-09-10
KK4LNB 2026-09-10
KK4LND 2026-09-10

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 →