The K4USD Network
Administrator: John Burningham, W2XAB
w2xab@arrl.net

The K4USD Network is operated by the US Digital Amateur Repeater Club (K4USD) using multiple c‑Bridges to interconnect Motorola Mototrbo repeaters together and peering with other DMR bridge providers including DMR-MARC, DMRX, DMR+, Brandmeister, and 27 other regional DMR networks.

Our main c-Bridges are located in a multihomed data center near Dayton Ohio on dedicated servers. We currently support repeaters in 16 states and DC in a managed network; we accept all amateur Mototrbo repeaters  (XPR8300, XPR8380, XPR8400, MTR3000, SL1000, SL5700, SL8000) and do not charge any fees, although we do accept donations.

We offer a wide variety of general public Talk Groups (TGs) listed below. We also offer some local/regional TGs not listed below on request. If a repeater owner/operator wants a TG not listed, they should contact the administrator.

The K4USD Network supports text messaging on TS2 within the network and linked to DMRX for other bridges wishing to participate. We do NOT support APRS because of FCC Part 97 identification requirements as DMR radios do not transmit a callsign. Please check with your repeater owner/operator to see if they allow text messaging on their repeater.

Repeater users should contact the repeater owner/operator for the TGs available on the repeater and time slot (TS) used for each TG. The TS listed below for the network wide TGs are the network default configuration which may vary for specific repeaters.

Talk Group Name

TG

TS

Comments

DMR-MARC WW

1

1

World Wide (DMR-MARC)

Local 2

2

2

Local Area Network (defined by the local repeaters)

DMR-MARC NA

3

1

North America (DMR-MARC)

Local 8

8

2

Secondary Local Area Network (if available, also TS1 on some rpts)

Local 9

9

2

Local Repeater Only

Brandmeister WW

91

1

World Wide (BM)

Brandmeister NA

93

1

North America (BM)

DMR+ USA

133

1

DMRPlus USA (Reflector 4639)

USA

1776

2

USA Talkgroup

Bridge

3100

2

“The Bridge” (DMRX & Brandmeister)

 

 

 

 

WW-German

10

1

WW German Language (DMR-MARC)

WW-German UA1

110

2

WW German Language UA1 (DMR-MARC)

WW-German UA2

120

2

WW German Language UA2 (DMR-MARC)

WW-English

13

1

WW English Language (DMR-MARC)

WW-English UA1

113

2

WW English Language UA1 (DMR-MARC)

WW-English UA2

123

2

WW English Language UA2 (DMR-MARC)

WW-Spanish

14

1

WW Spanish Language (DMR-MARC)

WW-Spanish UA1

114

2

WW Spanish Language UA1 (DMR-MARC)

WW-Spanish UA2

124

2

WW Spanish Language UA2 (DMR-MARC)

WW-Any Language UA1

119

2

WW Any Language UA1 (DMR-MARC)

WW-Any Language UA2

129

2

WW Any Language UA2 (DMR-MARC)

 

 

 

 

Comm1

3777215

1

Original Talk Groups from 2009 on TRBO-6 (DMRX)

Comm2

3777216

2

Original Talk Groups from 2009 on TRBO-6 (DMRX)

TAC-1

8951

2

Tactical Channel (DMRX)

TAC-310

310

2

Tactical Channel for QSOs (DMRX) (Linked to BM)

TAC-311

311

2

Tactical Channel for QSOs (DMRX) (Linked to BM)

TAC-312

312

2

Tactical Channel for QSOs (DMRX) (Linked to BM)

TAC-313

313

2

Tactical Channel for QSOs (DMRX)

TAC-314

314

2

Tactical Channel for QSOs (DMRX)

TAC-315

315

2

Tactical Channel for QSOs (DMRX)

TAC-316

316

2

Tactical Channel for QSOs (DMRX)

TAC-317

317

2

Tactical Channel for QSOs (DMRX)

TAC-318

318

2

Tactical Channel for QSOs (DMRX)

TAC-319

319

2

Tactical Channel for QSOs (DMRX)

 

 

 

 

Midwest Region

3169

 

ND SD NE MN IA MO WI IL MI IN OH (DMR-MARC) (DMR+ 4640)

Northeast Region

3172

 

NY NJ VT MA CT NH RI ME (DMR-MARC) (DMR+ 4642)

Mid-Atlantic Region

3173

 

PA WV VA MD DE DC (DMR-MARC) (DMR+ 4643)

Southeast Region

3174

 

AR LA KY TN MS AL GA FL NC SC (DMR-MARC) (DMR+ 4644)

Southern Plains Region

3175

 

KS OK TX (DMR-MARC) (DMR+ 4645)

Southwest Region

3176

 

CA NV AZ NM HI (DMR-MARC) (DMR+ 4646)

Mountain Region

3177

 

AK WA OR ID MT WY UT CO (DMR-MARC) (DMR+ 4647)

 

 

 

 

JOTA

907

2

Boy Scout Jamboree-on-the-Air (BM)

JOTA TAC1

9071

2

Boy Scout Jamboree-on-the-Air TAC-1 (BM)

JOTA TAC2

9072

2

Boy Scout Jamboree-on-the-Air TAC-2 (BM)

 

 

 

 

Delaware

3110

2

DE State TG

District of Columbia

3111

2

DC Wide TG

Florida

3112

2

FL State TG

Georgia

3113

2

GA State TG

Illinois

3117

2

IL State TG

Indiana

3118

2

IN State TG

Iowa

3119

2

IA State TG

Kentucky

3121

2

KY State TG

Maryland

3124

2

MD State TG

Massachusetts

3125

2

MA State TG

Michigan

3126

2

MI State TG

Minnesota

3127

2

MN State TG

Missouri

3129

2

MO State TG

New Jersey

3134

2

NJ State TG

New York

3136

2

NY State TG

North Carolina

3137

2

NC State TG

Ohio

3139

2

OH State TG

Pennsylvania

3142

2

PA State TG

Rhode Island

3144

2

RI State TG

South Carolina

3145

2

SC State TG

Tennessee

3147

2

TN State TG

Texas

3148

2

TX State TG

Virginia

3151

2

VA State TG

Wisconsin

3155

2

WI State TG

 

 

 

 

Crossroads

8710

2

Indiana Statewide TG

First Coast

31121

2

NE Florida

Net31001

31001

2

Scheduled Nets (BM)

Net31002

31002

2

Scheduled Nets (BM)

 

 

 

 

 

Some documents, files and links of interest to the Amateur community:

Amateur Radio Guide to Digital Mobile Radio (DMR): http://guide.k4usd.org

Technician Study Cards: http://technician.k4usd.org

 

K4USD Peer Watch: http://cbridge.k4usd.org:42420/PeerWatch

K4USD Net Watch: http://cbridge.k4usd.org:42420/MinimalNetwatch

Network Statistics: http://dmrx.net/dashboard/dmrx-dashboard-k4usd_network.html
(This only represents repeaters/users on our primary gateway/conference bridge)

 

Ham Friendly DMR Dealers

http://twowaydigitalradio.com (Motorola Dealer, new and used)

http://sandyscomm.com (Motorola Dealer)

http://connectsystems.com (DMR Dealer, friendly technical support)

https://www.bridgecomsystems.com/ (DMR Dealer, friendly technical support)

http://www.grapevineamateurradio.com (very friendly dealer in Grapevine TX)

http://www.randl.com (Everything Ham Radio in Hamilton OH)

http://www.hamradio.com (Everything Ham Radio, largest dealer chain)

http://www.hamvention.org (While not a dealer, you will find everything you want there)

 

Revision:

09/16/2018         New Webpage released
09/22/2018         Added DMR Guide link
09/25/2018         Added TG3100, Added link to Technician Study Cards
10/05/2018         Revised web page, added some more dealers.