Related Manuals for DV Development Group DV4mini
Summary of Contents for DV Development Group DV4mini
- Page 1 DV4mini DV4mini: D-Star/DMR/C4FM/P25-Hotspot-USB-Stick User Guide Version 9.2015 DV Development GroupVersion 1.61 Author German Version: DH5RAE (English translation: N1DL) - 1 -...
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Page 2: Table Of Contents
Windows:....................11 Driver installation:................11 Linux-PC:....................11 Linux-ARM:...................12 Screen - DV Control:.................12 Bootloader/Firmware update:...............15 Screen - Expert setup................17 DV4mini list and auto connect:............17 Accept only own call sign:..............17 Language:.....................18 Select next location:................18 Gateway for C4FM Repeater, Call:............18 Hamnet IP.....................18 Only own call:..................18 - 2 -... -
Page 3: Capability Of This Board And Software
Important Links:.................20 Operating conditions:................20 Capability of this board and Software: The DV4mini is a very small but also very capable USB Stick that can expand any PC into a Hotspot for the D-STAR, DMR, C4FM and APCO P25 modes. It consists of a powerful 32 bit micro controller, a complete 70 cm transceiver and a modulator/demodulator for GMSK and 4FSK (incl. -
Page 4: Digital Modes
D-Star with 2 frequencies). This allows to double the data rate to 9600 bit/s. This higher rate allows the transmission of 2 channels at the same time (2 time slots). The DV4mini always operates in time slot 1 and in simplex mode. The radios must be confgured accordingly. -
Page 5: C4Fm-Fusion
In Germany and increasingly in the USA Motorola repeaters are in use that utilize this mode. Because of the similarity with C4FM we included this mode in the DV4mini. There is also a reflector for it in “reflector.net” System requirements: These components are a prerequisite: 1. -
Page 6: Reflectors
This picture shows a DV4mini connected to a Raspberry PI 2 Mod. B: On the upper right is a WLAN stick and below it the DV4mini. In addition there are also connections to a keyboard, a mouse and a HDMI display. This confguration allows for a power saving continuos operation at low expense. -
Page 7: Fcs
These rooms (A to Z) have been given names to make their identifcation easier and are shown on the user surface of the DV4mini. FCS: FCS reflectors are similar to DCS reflectors but planned for the Yaesu C4FM system. -
Page 8: Dmr Reflectors
Two nets exist. One based on Hytera and the other based on Motorola technology. As Hytera is open towards Ham Radio the DV4mini sticks check into the Hytera based network. In the meantime there are also some cross connections existing that allow communication beyond ones net limits. -
Page 9: Hardware
Your transceiver will be set up for Simplex use - RX and TX on the same frequency. The DV4mini takes the 5 Volt operating voltage from the USB interface. On a few PCs this voltage however may be too low (we measured below 4.5 V on some). -
Page 10: Antenna
Always hold on to the base and not the stick. Damaged SMA connectors are not covered by warranty. In order to utilize the stick in many countries the DV4mini covers a large range of frequencies from 420 to 450 MHz. It is the operators... -
Page 11: Software Installation
That is where you also fnd the setup program for Windows. Download it from the site and start it. It will install all program segments and the needed additional programs by Microsoft. This will create a DV4mini icon to let you start the program. -
Page 12: Linux-Pc
In order to gain access tot he USB/serial interface the user account must become a member of the group “dialout”. Open the Console and enter sudo gpasswd —add myusername dialout The DV4mini program gets started by entering mono dv4mini.exe in the console. Or you can create a screen icon. Linux-ARM: The same info as in PC-Linux is valid. - Page 13 The user surface is pretty simple and should not create problems. DMR/CCS7 ID: the 7 digit number 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. Hotspot call sign: I f you entered your CCS7 ID the own call will automatically be inserted and the letter D is pre-entered.
- Page 14 RX-QRG: this is the frequency the DV4mini receives on. When using DMR it is also the transmit frequency. TX-QRG: in D-Star mode you can operate in duplex mode (not in DMR) and you can enter the transmit frequency here After inputting these the DV4mini will store them.
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Page 15: Bootloader/Firmware Update
Bootloader/Firmware update: In order to update the frmware a boot loader is installed in the DV4mini: First you save the new frmware fle on your computer. Normally you will fnd it at http://dv4m.ham-dmr.ch In the Expert Tab click on “Flash Firmware”. - Page 16 You connect the red marked points for example with tweezers while inserting the stick into a USB interface. The boot loader starts now with LEDs in color. Now you can start the user interface dv4mini and utilizing the Expert setup load the new frmware by clicking on “Flash Firmware”.
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Page 17: Screen - Expert Setup
Accept only own call sign: if this entry is active then only one D-Star transceiver with the same call sign as the DV4mini call sign can operate via the hotspot. All others are locked out. This is a requirement in some countries regulations. -
Page 18: Language
DMR reflector doesn’t work - pick another one. Gateway for C4FM Repeater, Call: If you use the DV4mini as a gateway for a C4FM repeater you need to click on this feld and add the call sign of the repeater. Otherwise the repeater will not retransmit. -
Page 19: Tx Buffer Size
Remote Control: One can control the DV4mini additionally from another computer. Computer 1: This is where the DV4mini USB stick is plugged in. One starts the program “dv_serial” in console mode. Computer 2: Here you start dv4mini.exe - the user surface. In order to fne computer 1 is IP address needs to be entered in the feld “distant... -
Page 20: Operating Without A User Interface
Linux purists happy. However it also works in Windows the same way. Copyright: The rights for the DV4mini stick and its software are reserved with DG8FAC (Stefan Reimann), DG1HT (Torsten Schultze) and DJ0ABR (Kurt Moraw). - Page 21 the operation. The manufacturer will not be liable for personal damages, property damage, losses or expenses which result from misuse or operation of this product. This includes claims for damages for failure or malfunctions. If the user does not have the necessary know-how to assemble, install or operate or is not in agreement with the operating conditions he/she may not use the product.