Confidence: Medium · Source: FCC ULS · As of 2026-09-11

KO4DEK

Cancelled

Masterson, David H

Location: Warrenton, VA
Class: General
Granted: 2020-04-27
Expires: 2030-04-27
FRN: 0016502825

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Vanity availability

Available

Available now

KO4DEK cleared its 2-year hold on 2022-07-24. Eligible for vanity application.

Last held by Masterson, David H (VA).

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

N1BATactive· E
Masterson, David HVAgranted 2020-07-24

License history

0 events

No recorded events.

More vanity slots coming available

From Virginia

All →

KG4VBI 2026-09-12
W4CVH 2026-09-12
KQ4URY 2026-09-13
KD4SUS 2026-09-14
KD4SVO 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 →