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.