N9TPB FCC License Search

🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 4, 2026) · next update tomorrow 6:00 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

Steve D Wolterstorff

FRN 0010592640 · first licensed Mar 18, 2004 as KC0RWV · 2 licenses on record

📝 FCC applications (6)

Received	File number	Service	Purpose	Status	Call
Jul 23, 2025	0011659880	HAM	Renewal	Granted	W0SDW
Aug 18, 2015	0006918228	HAM	Renewal	Granted	W0SDW
May 3, 2012	0005191185	HAM	Modification	Granted	W0SDW
Aug 16, 2005	0002280734	HAM	Modification	Granted	KC0RWV
Apr 28, 2005	0002141435	HAM	Modification	Granted	KC0RWV
Mar 18, 2004	0001662298	HAM	New license	Granted	KC0RWV

Complete licensing history

📦 Moved: Colton, SD → Sioux Fallslllllll, SD

W0SDW Active Amateur Extra · vanity Sep 7, 2005 → expires Sep 7, 2035

Licensee
Steve D Wolterstorff

Address
Attn: Steve Wolterstorff
308 W La Quinta Circle
Sioux Fallslllllll, SD 57108
43.4837, -96.7252 (street) · Grid EN13pl · CQ 4 · ITU 7 · map ↗

FRN
0010592640

Previous call
KC0RWV (General)

Last granted
Jul 24, 2025

Effective
Jul 24, 2025

Last action
Jul 24, 2025
FCC actions (5)
- Jul 24, 2025 — License renewed LIREN
- Aug 19, 2015 — License renewed LIREN
- May 3, 2012 — License modified LIMOD
- Sep 7, 2005 — Vanity call sign granted VANGRT
- Sep 7, 2005 — License issued LIISS
KC0RWV Canceled General Mar 18, 2004 → Sep 7, 2005 (canceled)

Licensee
Steve D Wolterstorff

Address
24863 468th Ave
Colton, SD 57018
43.7979, -96.9810 (ZIP center) · Grid EN13mt · CQ 4 · ITU 7 · map ↗

FRN
0010592640

Last granted
Mar 18, 2004

Effective
Apr 28, 2005

Last action
Sep 7, 2005
FCC actions (3)
- Sep 7, 2005 — License canceled LICAN
- Apr 28, 2005 — License modified LIMOD
- Mar 18, 2004 — License issued LIISS

Address history

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

Seen Sep 25, 2025 → Oct 4, 2026 · 3 snapshots · as W0SDW
Steve D Wolterstorff
Attn: Steve Wolterstorff
308 W La Quinta Circle, Sioux Fallslllllll, SD 57108
43.4837, -96.7252 (street) · Grid EN13pl · CQ 4 · ITU 7 · map ↗
Seen Nov 7, 2004 → Oct 4, 2026 · 51 snapshots · as KC0RWV
Steve D Wolterstorff
24863 468th Ave, Colton, SD 57018
43.7979, -96.9810 (ZIP center) · Grid EN13mt · CQ 4 · ITU 7 · map ↗
Seen May 28, 2012 → May 29, 2025 · 41 snapshots · as W0SDW
Steve D Wolterstorff
16332 467th Ave, Strandburg, SD 57265
44.9921, -96.7815 (ZIP center) · Grid EN14ox · CQ 4 · ITU 7 · map ↗

Repeaters within 50 miles

29 repeaters within 50 miles of this address, closest first · sort: closest · most active · map these & export for a radio →

● confirmed on the air · ● probably · ● reported off the air · ● unknown · ◉ this license · ring = 50 miles · click a dot for the repeater's page

● confirmed on the air · ● probably · ● reported off the air · no dot = unknown (hover a dot for the evidence)

Miles	Call	Name	Output	Offset	Tone	Mode	Networks	Activity	Location
1.7	W0ZML	Sioux Falls W0ZML AllStar	443.3000	+5	TONE 146.2	FM (analog) (DMR,FM)	AllStar 631740 BrandMeister 314644	—	Sioux Falls, SD
2.1	N4OGL	Sioux Falls N4OGL BM	446.5000	-5	CC1	DMR	BrandMeister 310677001	—	Sioux Falls, SD
3.5	KC0RFR	Sioux Falls KC0RFR	443.5000	+5	TONE 88.5	FM (analog) (FM,C4FM)		—	Sioux Falls, SD
3.6	KD0ZP	Sioux Falls Menl KD0ZP	444.8250	+5	TONE 103.5	FM (analog)		—	Sioux Falls, SD
3.6	W0FSD	Sioux Falls Menl W0FSD	223.8600	-1.6	TONE 146.2	FM (analog)		—	Sioux Falls, SD
3.9	N0RCY	Sioux Falls SD N0RCY BM	429.0000	-1	CC1	DMR	BrandMeister 3193241	—	Sioux Falls, SD, L0C, SD
4.0	WD0EXR	Sioux Falls WD0EXR BM	443.4000	+5	CC1	DMR	BrandMeister 310165	—	Sioux Falls, SD
4.0	W0ZWY	Sioux Falls W0ZWY	146.8950	-0.6	TONE 146.2	FM (analog)		—	Sioux Falls, SD
4.0	W0ZWY	Sioux Falls W0ZWY	442.7500	+5	none	D-STAR		—	Sioux Falls, SD
4.4	KE0WPC	Sioux Falls KE0WPC AllStar	443.8000	+5	DCS 174	FM (analog)	AllStar 632880	—	Sioux Falls, SD
4.4	KD0ZP	Sioux Falls KD0ZP EchoLink	444.9000	+5	TONE 146.2	FM (analog)	EchoLink 74079	—	Sioux Falls, SD
21.6	N0JPE	Fairview N0JPE IRLP	146.5600	simplex	TONE 67.0	FM (analog)	IRLP 7449 IRLP 7375	—	Fairview, SD
22.4	W0ZML	Moe W0ZML	443.4000	+5	TSQL 146.2	FM (analog)		—	Moe, SD
28.0	KA0VHV	Beresford KA0VHV	147.2400	+0.6	TONE 141.3	FM (analog)		—	Beresford, SD
29.1	KD0MC	Luverne KD0MC	147.1050	+0.6	TSQL 141.3	FM (analog)		—	Luverne, MN
36.0	W0VHQ	Rock Valley Perk W0VHQ	147.3000	+0.6	TSQL 110.9	FM (analog) (C4FM,FM)		—	Rock Valley, IA
36.4	W0SD	Turkey Ridge W0SD	444.9750	+5	TONE 146.2	FM (analog)		—	Turkey Ridge, SD
36.7	W0SD	Turkey Ridge W0SD	927.6000	-25	TONE 100.0	FM (analog)		—	Turkey Ridge, SD
38.2	W0SD	Salem W0SD IRLP	145.5100	simplex	TONE 146.2	FM (analog)	IRLP 7748	—	Salem, SD
38.2	W0SD	Salem W0SD	442.0750	+5	TONE 103.5	FM (analog)		—	Salem, SD
40.9	WG0F	Madison WG0F	442.7500	+5	none	D-STAR		—	Madison, SD
41.1	W0DRK	Pipestone W0DRK	147.0750	+0.6	TONE 141.3	FM (analog)		—	Pipestone, MN
41.5	KB0WSV	Colman KB0WSV	443.2250	+5	TONE 146.2	FM (analog)		—	Colman, SD
48.9	N0DCA	South Sioux City N0DCA	145.3250	-0.6	TSQL 110.9	FM (analog)		—	South Sioux City, NE
1.7	W0ZWY offline	Sioux Falls W0ZWY	444.2000	+5	TSQL 82.5	FM (analog) (FM,C4FM)		—	Sioux Falls, SD
3.0	K0LTN offline	Harrisburg McFar K0LTN	442.4000	+5	TONE 225.7	FM (analog)		—	Harrisburg, SD
39.6	K0TGA offline	Flandreau K0TGA	146.9850	-0.6	TONE 146.2	FM (analog)		—	Flandreau, SD
40.9	KB0MRG offline	Madison KB0MRG	440.1750	+5	TONE 131.8	FM (analog)		—	Madison, SD
49.0	W0OJY offline	Vermillion Cemen W0OJY	147.3750	+0.6	TONE 146.2	FM (analog)		—	Vermillion, SD

Vanity applications

Filed · Award	Applicant	Requested (in order)	Status
Filed Aug 16, 2005 Granted Jul 24, 2025 0002280734	KC0RWV · Steve D Wolterstorff · General Attn: Steve Wolterstorff · 24863 468th Ave, Colton, SD 57018 43.7979, -96.9810 (ZIP center) · Grid EN13mt · CQ 4 · ITU 7 · map ↗	1.W0SDW ✓ granted 2.N0SDW	Granted got W0SDW