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

AJ4BB HAM 📻 GMRS

📻

Also a GMRS licensee

WRTL553

Active until Jul 1, 2032 · same FCC Registration Number (FRN) · GMRS covers the licensee's immediate family

Amateur Extra class licensed since 2003 (23 yrs) AJ4BB since 2007 · previously KC8WOL Box Elder, SD grid DN84kc active on 1 net LoTW user GMRS WRTL553 26 repeaters within 50 mi

🔒 Not available — currently licensed, through May 8, 2033. If it isn't renewed, it opens for vanity requests May 9, 2035.

📬 QSL: LoTW user · last upload Jun 28, 2026 · not eQSL AG · QRZ · HamQTH

📝 AJ4BB has filed vanity applications before — latest filed Aug 31, 2016 · what was requested

Currently held by Matthias Zapatka · 1 holder on record

🗓 Active on 1 net · last heard Sep 13, 2026

Current holder: Matthias Zapatka

Held AJ4BB Aug 1, 2007 → present · first licensed May 8, 2003 as KC8WOL · 2 licenses · FRN 0008823965

📦 Moved: Chelsea, AL → Box Elder, SD

AJ4BB Active Amateur Extra Aug 1, 2007 → expires May 8, 2033

Licensee
Matthias Zapatka

Address
514 Americas Way Ste 5322
Box Elder, SD 57719
44.1038, -103.1455 (street) · Grid DN84kc · CQ 4 · ITU 7 · map ↗

FRN
0008823965

Previous call
KC8WOL (General)

Last granted
Mar 7, 2023

Effective
Mar 7, 2023

Last action
Mar 7, 2023
FCC actions (15)
- Mar 7, 2023 — License renewed LIREN
- Mar 24, 2021 — Administrative update LIAUA
- Feb 17, 2021 — Administrative update LIAUA
- Feb 2, 2021 — Administrative update LIAUA
- Mar 14, 2017 — Administrative update LIAUA
- Mar 14, 2017 — Administrative update LIAUA
- Oct 17, 2015 — Administrative update LIAUA
- Jan 4, 2014 — Administrative update LIAUA
- Feb 14, 2013 — License renewed LIREN
- Nov 22, 2012 — Administrative update LIAUA
- Sep 8, 2012 — Administrative update LIAUA
- Jul 6, 2011 — Administrative update LIAUA
- Oct 20, 2010 — Administrative update LIAUA
- Aug 1, 2007 — Systematic call sign granted SYSGRT
- Aug 1, 2007 — License issued LIISS
KC8WOL Canceled Amateur Extra May 8, 2003 → Aug 1, 2007 (canceled)

Licensee
Matthias Zapatka

Address
Attn: Wolfgang Dachale
133 Twin Oaks Circle
Chelsea, AL 35043
33.3106, -86.6629 (ZIP center) · Grid EM63qh · CQ 4 · ITU 8 · map ↗

FRN
0008823965

Last granted
May 8, 2003

Effective
Mar 22, 2006

Last action
Aug 1, 2007
FCC actions (6)
- Aug 1, 2007 — License canceled LICAN
- Mar 22, 2006 — License modified LIMOD
- Mar 19, 2004 — License modified LIMOD
- Feb 10, 2004 — Administrative update LIAUA
- Sep 3, 2003 — Administrative update LIAUA
- May 8, 2003 — License issued LIISS

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 · 13 snapshots · as AJ4BB
Matthias Zapatka
514 Americas Way Ste 5322, Box Elder, SD 57719
44.1038, -103.1455 (street) · Grid DN84kc · CQ 4 · ITU 7 · map ↗
Seen May 27, 2010 → Oct 4, 2026 · 48 snapshots · as KC8WOL
Matthias Zapatka
Attn: Wolfgang Dachale
133 Twin Oaks Circle, Chelsea, AL 35043
33.3106, -86.6629 (ZIP center) · Grid EM63qh · CQ 4 · ITU 8 · map ↗
Seen Mar 28, 2014 → May 6, 2019 · 15 snapshots · as AJ4BB
Matthias Zapatka
514 Americas Way #5322, Box Elder, SD 57719
44.2312, -102.9944 (ZIP center) · Grid DN84mf · CQ 4 · ITU 7 · map ↗
Seen Nov 16, 2015 → Feb 15, 2017 · 10 snapshots · as AJ4BB
Matthias Zapatka
7240 Pole Line Rd, Winnemucca, NV 89445
41.1211, -118.0085 (ZIP center) · Grid DN01xc · CQ 3 · ITU 6 · map ↗
Seen Feb 18, 2013 → Oct 22, 2013 · 4 snapshots · as AJ4BB
Matthias Zapatka
PO Box 5195
Lake Wylie, SC 29710
35.1063, -81.2215 (ZIP center) · Grid EM95jc · CQ 5 · ITU 8 · map ↗
Seen Oct 17, 2011 → Jul 26, 2012 · 4 snapshots · as AJ4BB
Matthias Zapatka
20660 Stevens Creek Blvd., #357, Cupertino, CA 95014
37.3084, -122.0819 (ZIP center) · Grid CM87xh · CQ 3 · ITU 6 · map ↗
Seen Nov 7, 2004 · 1 snapshot · as KC8WOL
Matthias Zapatka
C/O W Dachale 133 Twin Oak Circle, Chelsea, AL 35043
33.3106, -86.6629 (ZIP center) · Grid EM63qh · CQ 4 · ITU 8 · map ↗

Vanity applications filed by AJ4BB

Calls this licensee has asked the FCC for, newest first, in their order of preference. The FCC processes applications 18 days after filing; "likely award" is our estimate from every pending application in filing order.

Filed · Award	Applicant	Requested (in order)	Status
Filed Aug 31, 2016 Award date was Sep 18, 2016 0007438120	AJ4BB · Matthias Zapatka · Amateur Extra 7240 Pole Line Rd, Winnemucca, NV 89445 41.1211, -118.0085 (ZIP center) · Grid DN01xc · CQ 3 · ITU 6 · map ↗	1.W7ZM held	Dismissed

Nets

Net	When	Frequency	Role	Times	Last
Alaska Morning Net	Thu, Fri, Sun 11:45 AM CT	VOiP	Checked in	2	2026-09-13

From nets logged with NetLogger since the start of collection.

📡 On the air: APRS, digital & WSPR spots

📥 Hearing others PSK Reporter

Heard 24 stations (24 reports) · last 22 hr ago · FT8 · grid DL70jp

20m · 815m · 810m · 8

Farthest: N2SCJ, 2,224 miles on 10m FT8 (-3 dB)

PSK Reporter map →

📻 GMRS repeaters within 50 miles

5 on the air or of unknown status, closest first · map these & export for a GMRS radio →

Miles	Channel	Output	Tone in	Owner	Location	Access	Status
4	RP15	462.550	71.9	WPYL496	Box elder, SD	Open	On the air
30	RP17	462.600	141.3	WSCE787	Custer, SD · Mount Coolidge	Open	On the air
30	RP17	462.600	141.3	WSCE787	Custer, SD · Mount Coolidge	Open	On the air
34	RP19	462.650	141.3	WSCE787	Custer, SD · Bear Mountain	Open	Unknown
48	RP16	462.575	141.3	WSCE787	Hot springs, SD · Battle Mountain	Open	On the air

Repeaters within 50 miles

26 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
3.1	W0BLK	Rapid City Radar W0BLK	146.9400	-0.6	TONE 146.2	FM (analog)		—	Rapid City, SD
3.1	W0BLK	Rapid City Radar W0BLK AllStar	444.5750	+5	TSQL 146.2	FM (analog)	AllStar 54962 EchoLink 732271	—	Rapid City, SD
3.1	KE0QIB	Rapid City Radar KE0QIB	444.7500	+5	TSQL 146.2	FM (analog)		—	Rapid City, SD
4.1	KF0MKE	Rapid City KF0MKE BM	434.5500	+5	CC1	DMR	BrandMeister 319937602	—	Rapid City, SD
29.9	K0HS	Custer Mt K0HS WIRES-X	444.1200	+5	DCS 025	FM (analog) (FM,C4FM)	WIRES-X 21493	—	Custer, SD
29.9	K0HS	Custer Mt K0HS	147.1200	+0.6	TSQL 146.2	FM (analog)		—	Custer, SD
32.4	WN6QJN	Custer WN6QJN	147.0900	+0.6	TSQL 146.2	FM (analog)		—	Custer, SD
32.5	K0ORK	Custer K0ORK WIRES-X	444.1200	+5	DG-ID 00-00	Fusion (C4FM)	WIRES-X 98878	—	Custer, SD
33.9	KC0BXH	Custer Bear Mtn KC0BXH	146.8500	-0.6	TONE 146.2	FM (analog)		—	Custer, SD
34.2	K0HS	Custer Bear Mtn K0HS	444.8500	+5	none	FM (analog)		—	Custer, SD
35.1	WB0JEK	Lead Terry Pk WB0JEK	443.6500	+5	TSQL 131.8	FM (analog)		—	Lead, SD
37.5	KC0BXH	Lead Terry Pk KC0BXH	146.7600	-0.6	TSQL 146.2	FM (analog)		—	Lead, SD
37.5	WB0JEK	Lead Terry Pk WB0JEK	147.0300	+0.6	TONE 146.2	FM (analog)		—	Lead, SD
37.5	KC0BXH	Lead Terry Pk KC0BXH	444.9750	+5	TSQL 146.2	FM (analog)		—	Lead, SD
44.8	K0HS	Custer Pass K0HS WIRES-X	147.1500	+0.6	TSQL 146.2	FM (analog) (FM,C4FM)	WIRES-X 21493	—	Custer, SD
44.8	K0ORK	Hot Springs K0ORK WIRES-X	147.7500	-0.6	DG-ID 00-00	Fusion (C4FM)	WIRES-X 92626	—	Hot Springs, SD
48.2	K0HS	Hot Springs Batt K0HS	146.7000	-0.6	TONE 146.2	FM (analog)		—	Hot Springs, SD
48.2	K0HS	Hot Springs Batt K0HS WIRES-X	444.7000	+5	DCS 025	FM (analog) (FM,C4FM)	WIRES-X 21493	—	Hot Springs, SD
48.3	K0ORK	Hot springs K0ORK WIRES-X	449.7000	-5	DG-ID 00-00	Fusion (C4FM)	WIRES-X 94494	—	Hot springs, SD
49.8	W0FUI	Hot Springs W0FUI IRLP	146.4750	simplex	TONE 146.2	FM (analog)	IRLP 7976	—	Hot Springs, SD
3.1	KE0QIB offline	Rapid City Radar KE0QIB BM	444.7000	+5	CC1	DMR	BrandMeister 312555	—	Rapid City, SD
4.5	W0RE offline	Rapid City W0RE	444.2000	+5	TSQL 146.2	FM (analog)		—	Rapid City, SD
5.2	WA0MFZ offline	Rapid City WA0MFZ IRLP	147.5700	simplex	TSQL 146.2	FM (analog)	IRLP 4044	—	Rapid City, SD
5.2	N6SGX offline	Rapid City N6SGX IRLP	446.0000	simplex	TSQL 100.0	FM (analog)	IRLP 3967	—	Rapid City, SD
10.3	K0LGB offline	RAPID CITY K0LGB IRLP	147.4700	simplex	TSQL 146.2	FM (analog)	IRLP 8701	—	RAPID CITY, SD
33.6	WN6QJN offline	Custer Bear Mtn WN6QJN	53.1700	-1	TSQL 146.2	FM (analog)		—	Custer, SD