N9TPB FCC License Search

🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 8, 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 · old CB calls like KHC1939 or 18Q3518 (1962–63 CB call books) · (205) 546-1767 (1990s CB directory phones)

Christopher A Knudsen

FRN 0025470980 · first licensed Apr 8, 2016 as KE8DTT · 2 licenses on record

📝 FCC Applications (11)

Received	File number	Service	Purpose	Status	Call
Apr 18, 2022	0010007821	HAM	Modification	Dismissed	KE8DTT
Apr 12, 2022	0009999213	HAM	Modification	Dismissed	KE8DTT
Apr 11, 2022	0009997046	HAM	Modification	Granted	KE8DTT
Mar 8, 2022	0009943478	HAM	Modification	Dismissed	KE8DTT
Jan 10, 2022	0009860028	HAM	Modification	Dismissed	KE8DTT
Jan 3, 2022	0009849904	HAM	Modification	Dismissed	KE8DTT
Nov 24, 2021	0009808938	HAM	Modification	Dismissed	KE8DTT
Nov 22, 2021	0009806547	HAM	Modification	Granted	KE8DTT
Oct 18, 2021	0009758682	HAM	Administrative update	Granted	KE8DTT
Mar 6, 2019	0008554663	HAM	Administrative update	Granted	KE8DTT
Apr 8, 2016	0007222088	HAM	New license	Granted	KE8DTT

Complete Licensing History

WZ2F Active Amateur Extra · vanity Apr 29, 2022 → expires Apr 29, 2032

Licensee
Christopher A Knudsen

Address
PO Box 441
Ludington, MI 49431-0441
43.9646, -86.4093 (ZIP center) · Grid EN63tx · CQ 4 · ITU 8 · map ↗

FRN
0025470980

Previous call
KE8DTT (General)

Last granted
Apr 29, 2022

Effective
Apr 29, 2022

Last action
Apr 29, 2022
FCC actions (2)
- Apr 29, 2022 — Vanity call sign granted VANGRT
- Apr 29, 2022 — License issued LIISS
KE8DTT Canceled Amateur Extra Apr 8, 2016 → Apr 29, 2022 (canceled)

Licensee
Christopher A Knudsen

Address
PO Box 441
Ludington, MI 49431-0441
43.9646, -86.4093 (ZIP center) · Grid EN63tx · CQ 4 · ITU 8 · map ↗

FRN
0025470980

Last granted
Apr 8, 2016

Effective
Nov 22, 2021

Last action
Apr 29, 2022
FCC actions (6)
- Apr 29, 2022 — License canceled LICAN
- Nov 22, 2021 — License modified LIMOD
- Oct 19, 2021 — Administrative update LIAUA
- Mar 7, 2019 — Administrative update LIAUA
- Apr 8, 2016 — License issued LIISS
- Apr 8, 2016 — Systematic call sign granted SYSGRT

Address history

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

Seen Apr 16, 2022 → Oct 4, 2026 · 25 snapshots · as KE8DTT
Christopher A Knudsen
PO Box 441
Ludington, MI 49431-0441
43.9646, -86.4093 (ZIP center) · Grid EN63tx · CQ 4 · ITU 8 · map ↗
Seen May 6, 2019 · 1 snapshot · as KE8DTT
Christopher A Knudsen
Attn: Chris Knudsen
1794 Marilyn Dr, Ludington, MI 49431
43.9646, -86.4093 (ZIP center) · Grid EN63tx · CQ 4 · ITU 8 · map ↗
Seen Jun 30, 2016 → Jan 22, 2019 · 12 snapshots · as KE8DTT
Christopher A Knudsen
315 N James St, Ludington, MI 49431
43.9646, -86.4093 (ZIP center) · Grid EN63tx · CQ 4 · ITU 8 · map ↗

Repeaters within 50 Miles

33 repeaters within 50 miles of this ZIP code, most active 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 · center is the ZIP code (approximate) · 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
2.2	W8IRA	Ludington W8IRA	145.3100	-0.6	TONE 94.8	FM (analog)		—	Ludington, MI
2.2	WB8ERN	Ludington WB8ERN	146.6200	-0.6	TONE 94.8	FM (analog)		—	Ludington, MI
2.6	K8DXF	Ludington K8DXF	145.4700	-0.6	TONE 103.5	FM (analog)		—	Ludington, MI
18.5	N8UKH	Hart N8UKH WIRES-X	146.6400	-0.6	TSQL 94.8	FM (analog) (FM,C4FM)	WIRES-X 33027	—	Hart, MI
18.6	no call listed Listed as HART, MI	N8UKH Michigan	146.6400	-0.6	TSQL 94.8	FM (analog) (FM,C4FM)		—	N8UKH, MI
19.8	W8GJX	Manistee W8GJX	146.7800	-0.6	TSQL 94.8	FM (analog)		—	Manistee, MI
20.8	W8VTM	Hart W8VTM WIRES-X	443.6750	+5	TONE 94.8	FM (analog) (C4FM,FM)	WIRES-X 51191	—	Hart, MI
22.4	NW8J	Walkerville NW8J	145.4300	-0.6	TONE 94.8	FM (analog)		—	Walkerville, MI
28.1	AF8U	Baldwin Wolf Lk AF8U WIRES-X	146.9000	-0.6	TSQL 94.8	FM (analog) (C4FM,FM)	WIRES-X 21335	—	Baldwin, MI
31.1	W8MAB	Bitely W8MAB	147.2100	+0.6	none	FM (analog)		—	Bitely, MI
31.7	N8ARY Offline	Bitely N8ARY	146.5350	in 446.1250	TSQL 94.8	FM (analog)		—	Bitely, MI
34.5	KF9C	Kaleva KF9C	145.1700	-0.6	TONE 94.8	FM (analog)		—	Kaleva, MI
38.4	K8COP	Whitehall K8COP Mi5	443.2500	+5	CC1	DMR	Mi5	—	Whitehall, MI
38.4	K8COP	Muskegon City of K8COP	52.8000	-0.5	TSQL 94.8	FM (analog)		—	Muskegon, MI
38.4	W8AOR	Whitehall Camp W8AOR	146.6800	-0.6	TSQL 94.8	FM (analog)		—	Whitehall, MI
38.4	W8AOR	Whitehall Camp W8AOR	443.2500	+5	TSQL 94.8	FM (analog)		—	Whitehall, MI
41.5	WD8MKG	Holton WD8MKG	147.3200	+0.6	TSQL 91.5	FM (analog)		—	Holton, MI
42.2	KC8MSE	Fremont KC8MSE	442.0125	+0.6	CC?	DMR		—	Fremont, MI
42.2	KC8MSE	Fremont LA4 St KC8MSE EchoLink	146.9200	-0.6	TONE 94.8	FM (analog)	EchoLink 484692	—	Fremont, MI
42.8	KB8IFE	White Cloud Maik KB8IFE WIRES-X	145.4500	-0.6	TSQL 94.8	FM (analog) (C4FM,FM)	WIRES-X 43308	—	White Cloud, MI
42.8	KB8IFE	White Cloud Maik KB8IFE WIRES-X	444.9750	+5	TSQL 94.8	FM (analog) (C4FM,FM)	WIRES-X 43252	—	White Cloud, MI
43.5	KB8SVJ	Thompsonville KB8SVJ AllStar	147.3400	+0.6	TSQL 114.8	FM (analog)	AllStar 567758	—	Thompsonville, MI
43.8	W8BNZ	Honor Crystal W8BNZ	147.0400	+0.6	TSQL 114.8	FM (analog) (FM,C4FM)		—	Honor, MI
45.4	N8KDR	mecosta N8KDR WIRES-X	144.8500	+0.6	DG-ID 00-00	Fusion (C4FM)	WIRES-X 33308	—	mecosta, MI
46.5	KF8FQA	Big Rapids WDEE KF8FQA WIRES-X	442.1250	+5		Fusion (C4FM)	WIRES-X 83624	—	Big Rapids, MI
46.8	W8BNZ Offline	Frankfort W8BNZ	442.2000	+5	TSQL 114.8	FM (analog)		—	Frankfort, MI
47.9	W8BNZ Offline	Benzonia W8BNZ	442.6000	+5	TSQL 100.0	FM (analog) (FM,C4FM)		—	Benzonia, MI
48.3	KG8CW	Beulah KG8CW WIRES-X	147.0400	+0.6	DG-ID 00-00	Fusion (C4FM)	WIRES-X 99849	—	Beulah, MI
48.3	N8RTS	Big Rapids Arpt N8RTS WIRES-X	442.1250	+5		Fusion (C4FM)	WIRES-X 83624	—	Big Rapids, MI
48.7	W8QPO	Sherman W8QPO WIRES-X	147.1000	+0.6	TSQL 114.8	FM (analog) (C4FM,FM)	WIRES-X 21335	—	Sherman, MI
48.8	W8MKG Listed as W8MKG - W8ZHO/R	Muskegon W8MKG AllStar	146.9400	-0.6	TONE 94.8	FM (analog)	AllStar 643081	—	Muskegon, MI
49.7	W8IRA	Big Rapids W8IRA	145.2900	-0.6	TONE 94.8	FM (analog)		—	Big Rapids, MI
50.0	KB8QOI	Big Rapids Ferri KB8QOI EchoLink	443.9000	+5	none	FM (analog)	EchoLink 389477	—	Big Rapids, MI

Vanity Applications

Filed · Award	Applicant	Requested (in order)	Status
Filed Apr 18, 2022 Award date was May 6, 2022 0010007821	KE8DTT · Christopher A Knudsen · Amateur Extra PO Box 441 · Ludington, MI 49431-0441 43.9646, -86.4093 (ZIP center) · Grid EN63tx · CQ 4 · ITU 8 · map ↗	1.N8VT Held by PETER J FOLBERTH until May 6, 2032 2.WY2A Held by Eli W Tosh until Jun 21, 2035 3.WR9F Held by JAMES M SNOKE until Feb 28, 2033 4.N4SH Held by DAVID W TODD until May 6, 2032	Dismissed
Filed Apr 12, 2022 Award date was Apr 30, 2022 0009999213	KE8DTT · Christopher A Knudsen · Amateur Extra PO Box 441 · Ludington, MI 49431-0441 43.9646, -86.4093 (ZIP center) · Grid EN63tx · CQ 4 · ITU 8 · map ↗	1.W5KZ Held by Michael R Gunter until Apr 30, 2032	Dismissed
Filed Apr 11, 2022 Granted Apr 29, 2022 0009997046	KE8DTT · Christopher A Knudsen · Amateur Extra PO Box 441 · Ludington, MI 49431-0441 43.9646, -86.4093 (ZIP center) · Grid EN63tx · CQ 4 · ITU 8 · map ↗	1.WZ2F ✓ Granted 2.NZ3B Held by James E Hlavin II until Feb 3, 2036 3.N9SV Held by JOSEPH L KELLY until Apr 29, 2032 4.W6WK Held by JAIME DEVAUD until Apr 22, 2032 5.K8DX Held by SCOTT R DETLOFF until Mar 27, 2027 6.N9SV Held by JOSEPH L KELLY until Apr 29, 2032	Granted got WZ2F
Filed Mar 8, 2022 Award date was Mar 26, 2022 0009943478	KE8DTT · Christopher A Knudsen · Amateur Extra PO Box 441 · Ludington, MI 49431-0441 43.9646, -86.4093 (ZIP center) · Grid EN63tx · CQ 4 · ITU 8 · map ↗	1.K8AK Held by MATTHEW A FERRARA until Dec 21, 2034 2.WX8A Held by Mark S Atwell until Mar 25, 2032	Dismissed
Filed Jan 10, 2022 Award date was Jan 28, 2022 0009860028	KE8DTT · Christopher A Knudsen · Amateur Extra PO Box 441 · Ludington, MI 49431-0441 43.9646, -86.4093 (ZIP center) · Grid EN63tx · CQ 4 · ITU 8 · map ↗	1.W8WS Held by JOHN R BURDEN JR until Jan 28, 2032	Dismissed
Filed Jan 3, 2022 Award date was Jan 21, 2022 0009849904	KE8DTT · Christopher A Knudsen · Amateur Extra PO Box 441 · Ludington, MI 49431-0441 43.9646, -86.4093 (ZIP center) · Grid EN63tx · CQ 4 · ITU 8 · map ↗	1.N8NS Held by Hideki Sugiura until Jan 21, 2032	Dismissed
Filed Nov 24, 2021 Award date was Dec 12, 2021 0009808938	KE8DTT · Christopher A Knudsen · Amateur Extra Attn: Chris Knudsen · PO Box 441 · Ludington, MI 49431 43.9646, -86.4093 (ZIP center) · Grid EN63tx · CQ 4 · ITU 8 · map ↗	1.N8TV Held by Cole J Alexander until Dec 14, 2031 2.K8DX Held by SCOTT R DETLOFF until Mar 27, 2027	Dismissed