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D­Plus reflectors:

 

 
They were the first generation D-STAR reflector system. Although it is getting 
old it is still used intensively in a number of countries (mostly english 
speaking ones like USA, UK and Canada but even in Germany there are a few 
operational). D-Plus reflectors are named REF001, REF002 etc. Simultaneous 
QSOs are possible. 
 

DMR reflectors:

 

 
DMR reflectors consist of several regional servers that are connected with 
each other via a superordinate network. Several  nets exist, see earlier in this 
text . 

In the meantime there are also some cross connections existing that 

allow communication beyond one’s net limits. 

 

Net organization (CCS7):

 

 
The big number of reflectors, repeaters and also Dongle users (the DV4mini 
is a Dongle too) require a structured organization to make the network 
technology work properly. 
 
D-Star works with call signs to identify a station. DMR however uses 
numbers. That is why it is necessary that an amateur radio station gets a 
number assigned in addition to its call sign and that this  
call sign/number combination is known to the network. 
 
Every ham can go to the website  xreflector.net or dmr-marc.net and request 
a 7 digit number to be assigned. This number is then entered into the specific 
field on the DV4mini software. The call sign is pulled and a report is sent to 
the network to establish worldwide contacts in D-Star or DMR and the use of 
D-Star/DMR bridges. 
 
 
 

 

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Summary of Contents for DV4mini

Page 1: ...DV4mini DV4mini D Star DMR C4FM P25 Hotspot USB Stick User Guide Version 1 2016 DV Development Group Version 1 61 Author German Version DH5RAE English translation N1DL Update DG1SW and AG0X 1...

Page 2: ...se 7 D Plus reflectors 7 DMR reflectors 8 Net organization CCS7 8 Operating modes 8 Hardware 9 Technical Data 9 Antenna 10 Software installation 11 Windows 11 Driver installation 11 Linux PC 11 Linux...

Page 3: ...r C4FM Repeater Call 18 Hamnet IP 18 Only own call 18 Frequency Correction 18 TX buffer size 19 Remote Control 19 Operating without a user interface 20 Copyright 20 Important Links 20 Operating condit...

Page 4: ...ams have a DV digital voice capable transceiver but cannot reach the closest DV repeater With the DV4mini it has become possible to create a hotspot with minimal resources and thus get access to a DV...

Page 5: ...ree reflector systems are used for communication DCS most common D Plus REF reflectors mostly in English speaking countries and the x Reflector system which plays a minor role DV4mini enables communic...

Page 6: ...ol center Select the appropriate IPSC2 server as your DMR server and you can connect to the Motorola TG on TS1 and to the DMR Plus TG on timeslot 2 C4FM Fusion C4FM FUsion is a system developed by YAE...

Page 7: ...the mode experimental System requirements The following components are necessary 1 DV4mini USB stick 2 PC Software DV4mini Control Panel 3 A digital radio D Star DMR C4FM P25 If you use the DV4voice...

Page 8: ...you have the DV4voice AMBE The picture shows a DV4mini connected to a Raspberry PI 2 Mod B The dongle on the top is a WiFi stick to connect to the internet Below you can see the DV4mini The board als...

Page 9: ...C4FM system FCS001and FCS002 have 100 rooms each numbered 0 99 PCS PCS reflectors are also similar to DCS reflectors but used by the P25 system Both PCS001 and PCS002 have rooms 0 99 Xreflectors Xref...

Page 10: ...yond one s net limits Net organization CCS7 The big number of reflectors repeaters and also Dongle users the DV4mini is a Dongle too require a structured organization to make the network technology wo...

Page 11: ...od access to a digital repeater because you are inside a building you are too far away or you are on vacation You use your own call sign for the hotspot Reduce your transmit power to a point where you...

Page 12: ...Star GMSK Gaussian 2FSK Modulation DMRPLUS 4FSK Raised Cosine Antenna connector SMA female 50 Ohm USB interface USB type A Operating Voltage 5 Volt Current max RX 15 mA TX with 12 mW 188 mA S Meter 1...

Page 13: ...covers a large range of frequencies from 420 to 450 MHz in the UHF version and it covers 144 to 148 MHz in the VHF version It is the operator s responsibility to use only the frequencies which comply...

Page 14: ...k for a driver you can go to the device manager find the DV4mini and click on update driver Linux PC The program requires the complete installation of Mono You install for example with apt get the pac...

Page 15: ...uick We realize that this may overwhelm some hams so we created complete images for the important computers which are also downloadable from http dv4m ham dmr ch Control Panel DV Control After startin...

Page 16: ...MR CCS7 ID the 7 digit ID If you don t have one yet or have forgotten yours go to xreflector net and query under USER Register or apply for one The DV4mini will not be found without this number and th...

Page 17: ...tar also specify the port and click CONNECT to create a connection or DISCONNECT to end an existing connection You can select D Star and Fusion reflectors by using the touch tone DTMF feature For exam...

Page 18: ...der to update the firmware a boot loader is installed in the DV4mini First you save the new firmware file to your computer You will find it at http dv4m ham dmr ch or at http wirelesshold com manuals...

Page 19: ...ake a little while until the DV4mini is found again Be patient The boot loader is protected Even with a power outage or interruption of the USB interface the update procedure can be repeated If the bo...

Page 20: ...or example with tweezers while inserting the DV4mini into the USB interface The boot loader will start with LEDs in color Now you can start the user interface dv4mini Go to expert settings load the ne...

Page 21: ...be checked The software will automatically connect to the next available DV4mini You can run more than one DV4mini in your local network with dv_serial started Select one of them by checking one in t...

Page 22: ...ld is checked This function may not work in all modes It works for C4FM and as soon as the reflector servers can support it it will be implemented Only own call This function is only supported in D St...

Page 23: ...mall buffer if you have a stable and fast internet connection However if you use mobile networks H Edge LTE etc drop outs in the data stream can be substantial In this case you pick buffer sizes of 1...

Page 24: ...tze Important Links Software Firmware Operating Manuals Drivers http dv4m ham dmr ch and http wirelesshold com manuals aspx Developer info and interfaces www dj0abr de DMR CCS7 number allocation at ww...

Page 25: ...losses or expenses which result from misuse or operation of this product This includes claims for damages failure or malfunctions If the user does not have the necessary know how to assemble install...

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