N9TPB FCC License Search

🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 14, 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)

Mitchell L Ahrenstorff

FRN 0023355381 · first licensed Feb 13, 2014 as KD0ZBS · 2 licenses on record

📝 FCC Applications (6)

Received	File number	Service	Purpose	Status	Call
Dec 16, 2025	0011833601	HAM	Administrative update	Granted	AD0HJ
Dec 27, 2023	0010830370	HAM	Renewal	Granted	AD0HJ
Dec 5, 2023	0010804701	HAM	Renewal	Dismissed	AD0HJ
Jun 2, 2021	0009572527	HAM	Administrative update	Granted	AD0HJ
Feb 27, 2014	0006175152	HAM	Modification	Granted	KD0ZBS
Feb 13, 2014	0006149867	HAM	New license	Granted	KD0ZBS

Complete Licensing History

📦 Moved: Breezy Point, MN → Jackson, MN

AD0HJ Active Amateur Extra Feb 27, 2014 → expires Feb 13, 2034

Licensee
Mitchell L Ahrenstorff

Address
806 Brown Street
JACKSON, MN 56143-1010
43.6239, -94.9938 (street) · Grid EN23mo · CQ 4 · ITU 7 · map ↗

FRN
0023355381

Previous call
KD0ZBS (General)

Last granted
Jan 3, 2024

Effective
Dec 17, 2025

Last action
Dec 17, 2025
FCC actions (5)
- Dec 17, 2025 — Administrative update LIAUA
- Jan 3, 2024 — License renewed LIREN
- Jun 3, 2021 — Administrative update LIAUA
- Feb 27, 2014 — Systematic call sign granted SYSGRT
- Feb 27, 2014 — License issued LIISS
KD0ZBS Canceled Amateur Extra Feb 13, 2014 → Feb 27, 2014 (canceled)

Licensee
Mitchell L Ahrenstorff

Address
8943 Breezy Point Blvd
Breezy Point, MN 56472
46.5823, -94.3408 (ZIP center) · Grid EN26tn · CQ 4 · ITU 7 · map ↗

FRN
0023355381

Last granted
Feb 13, 2014

Effective
Feb 27, 2014

Last action
Feb 27, 2014
FCC actions (3)
- Feb 27, 2014 — License canceled LICAN
- Feb 13, 2014 — License issued LIISS
- Feb 13, 2014 — 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 Sep 27, 2026 → Oct 11, 2026 · 3 snapshots · as AD0HJ
Mitchell L Ahrenstorff
806 Brown Street, JACKSON, MN 56143-1010
43.6239, -94.9938 (street) · Grid EN23mo · CQ 4 · ITU 7 · map ↗
Seen Mar 28, 2014 → Oct 11, 2026 · 64 snapshots · as KD0ZBS
Mitchell L Ahrenstorff
8943 Breezy Point Blvd, Breezy Point, MN 56472
46.5823, -94.3408 (ZIP center) · Grid EN26tn · CQ 4 · ITU 7 · map ↗
Seen Apr 16, 2022 → Sep 25, 2025 · 11 snapshots · as AD0HJ
Mitchell L Ahrenstorff
314 1ST ST APT 107, JACKSON, MN 56143-1699
43.6277, -95.0024 (ZIP center) · Grid EN23lp · CQ 4 · ITU 7 · map ↗

Nets

Net	When	Frequency	Role	Times	Last
AMSAT MEETUP 10PM EST	Wed 7:45 PM CT	DMR 98006	Net control	1	2026-10-01
AMSAT X MEETUP 0200Z	Wed 7:15 PM CT	DMR 98006	Net control	1	2026-10-01
AMSAT MEETUP NET 10PM E	Wed 7:45 PM ET	DMR 98006	Checked in	1	2026-10-07
AMSAT MEETUP 10PM EST	Wed 7:45 PM CT	DMR 98006	Checked in	1	2026-10-01

From nets logged with NetLogger since the start of collection.

Repeaters within 50 Miles

23 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
13.5	N0BPA	Superior N0BPA	147.3450	+0.6	DCS 271	FM (analog) (FM,P25)		—	Superior, IA
15.7	W0DOG	Spirit Lake W0DOG EchoLink	146.6100	-0.6	TONE 110.9	FM (analog)	EchoLink 905962 EchoLink 350195	—	Spirit Lake, IA
16.8	W0DRK	Windom W0DRK	147.2550	+0.6	TSQL 141.3	FM (analog)		—	Windom, MN
16.8	W0DRK	Windom W0DRK	444.2500	+5	TSQL 141.3	FM (analog)		—	Windom, MN
26.5	K6ZC	Fairmont K6ZC	146.9700	-0.6	none	D-STAR		—	Fairmont, MN
26.5	K6ZC	Fairmont K6ZC	1284.5000	-12	none	D-STAR		—	Fairmont, MN
26.6	KD0TGF Listed as KD0TGF-FAIRMONT	Fairmont KD0TGF BM	443.9250	+5	CC10	DMR	BrandMeister 314172	—	Fairmont, MN
26.7	K0SXR	Fairmont K0SXR	146.6400	-0.6	none	FM (analog)		—	Fairmont, MN
26.7	N0PBA	Fairmont N0PBA	444.3500	+5	TONE 136.5	FM (analog)		—	Fairmont, MN
30.1	K0QBI	Worthington K0QBI	146.6700	-0.6	TONE 141.3	FM (analog) (C4FM,FM)		—	Worthington, MN
30.1	W0DRK	Worthington W0DRK	444.8500	+5	TSQL 141.3	FM (analog) (C4FM,FM)		—	Worthington, MN
34.4	KG0CK	Spencer KG0CK BM	146.8200	-0.6	CC1	DMR	BrandMeister 311927	—	Spencer, IA
34.5	W0DRK	Fulda W0DRK	147.3600	+0.6	TSQL 141.3	FM (analog) (C4FM,FM)		—	Fulda, MN
42.1	KG0CK	Gillett Grove KG0CK BM	444.7000	+5	TONE 110.9	FM (analog) (DMR,FM)	BrandMeister 310147	—	Gillett Grove, IA
44.6	N0PBA	Blue Earth N0PBA	147.0000	+0.6	TSQL 136.5	FM (analog)		—	Blue Earth, MN
44.6	KE0RTF	Blue Earth KE0RTF	443.0250	+5	TSQL 114.8	FM (analog) (FM,C4FM)		—	Blue Earth, MN
45.1	W0VHQ	Sanborn Wtr W0VHQ EchoLink	145.3100	-0.6	TSQL 110.9	FM (analog) (C4FM,FM)	EchoLink 102345	—	Sanborn, IA
45.1	W0VHQ	Sanborn Wtr W0VHQ	443.9000	+5	TSQL 110.9	FM (analog) (C4FM,FM)		—	Sanborn, IA
45.6	W0DRK	Slayton DOT on W0DRK	146.7900	-0.6	TSQL 141.3	FM (analog) (C4FM,FM)		—	Slayton, MN
48.9	KC0TQU	Primghar KC0TQU	444.8750	+5	TSQL 110.9	FM (analog)		—	Primghar, IA
49.0	KD0IAI	Wanda KD0IAI AllStar	444.0250	+5	TSQL 141.3	FM (analog) (DV,FM)	AllStar 570991	—	Wanda, MN
26.6	K6ZC Offline	Fairmont K6ZC	443.9250	+5	none	FM (analog) (DV,FM)		—	Fairmont, MN
29.6	K0QBI Offline	Worthington K0QBI IRLP	146.4600	simplex	none	FM (analog)	IRLP 3980	—	Worthington, MN