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

W4KM

Active

Kostera IV, Thomas A

Location: Savannah, TN
Class: Amateur Extra
Granted: 2025-03-18
Expires: 2035-03-18
Previous call: N9KC
FRN: 0022794499

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

Vanity availability

Held

Currently held

W4KM is held by an active license; it isn't a vanity slot right now.

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

N9KCactive· E
Wang, Kevin LNYgranted 2017-02-24
AC2MFcancelled· E
Wang, Kevin LNYgranted 2013-12-05cancelled 2017-02-24

Prior holders later became

W1STNexpired· E
ANDERSON, DEXTERCTgranted 2013-01-15cancelled 2025-01-16

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 W4

All →

W4HKO FL · 2026-09-09
W4IDI AL · 2026-09-10
W4YAU TN · 2026-09-10
W4CVH VA · 2026-09-12
W4QDZ NC · 2026-09-13

Full history → Vanity availability → Callsign genealogy →