N9TPB FCC License Search

🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 4, 2026) · next update today 8:30 am CDT

Ask: HAMs within 5 miles of N9TPB · Extra class operators in Madison, WI · or try N9TPB · K9* wildcards · Smith, John · 0004797601 (FRN) · 53703 · Madison, WI

WILLIAM W SIMPSON

FRN 0010783736 · first licensed Apr 21, 2004 as KN4W · 1 license on record

📝 FCC applications (1)

Received	File number	Service	Purpose	Status	Call
Apr 21, 2004	0001706296	HAM	Renewal	Granted	KN4W

Complete licensing history

KN4W Expired Amateur Extra Apr 21, 2004 → Jul 9, 2014 (expired)

Licensee
WILLIAM W SIMPSON

Address
5110 LONGLEAF DR
DURHAM, NC 27715

FRN
0010783736

Last granted
Apr 21, 2004

Effective
Apr 21, 2004

Last action
Jul 12, 2016
FCC actions (2)
- Jul 12, 2016 — License expired LIEXP
- Apr 21, 2004 — FCC action LITIN

Address history

From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.

Seen Nov 7, 2004 → Oct 4, 2026 · 48 snapshots · as KN4W
WILLIAM W SIMPSON
5110 LONGLEAF DR, DURHAM, NC 27715