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

KO4N

Cancelled

UNDERWOOD, DAVID D

Location: Nashville, TN
Class: Amateur Extra
Granted: 2006-06-13
Expires: 2016-06-13
Previous call: KE5BJB
FRN: 0010868511

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Vanity availability

Unknown

Status unknown

No vanity-slot record on file for KO4N. Either it has never been issued, is currently held by an active license, or hasn't been re-computed since its last freeing event.

Vanity availability dates are computed from FCC §97.19's hold periods: 2 years from the cancellation date for cancelled or terminated licenses, 4 years from the expiration date for expired licenses (2-year renewal grace + 2-year hold).

Callsign genealogy

Full chain →

Previously held by current licensee

KK4LYJcancelled· E
SPRINGTHORPE, DWIGHTNCgranted 2012-10-09cancelled 2012-12-07

Prior holders later became

W1GATcancelled· E
UNDERWOOD, DAVID DTNgranted 2010-11-16cancelled 2012-10-27

License history

0 events

No recorded events.

More vanity slots coming available

From Tennessee

All →

KG4TWC 2026-09-10
KK4LNE 2026-09-10
KK4LNK 2026-09-10
KQ4TPH 2026-09-10
KQ4UUA 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 →