DV Development Group DV4mini Manuale d'uso - Pagina 5
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User Guide 2015
D-Plus reflectors:
They were the frst generation D-STAR refector 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 are a few operational). D-Plus
refectors are named REF001, REF002 etc.
They also use a number of ports allowing for simultaneous QSOs.
DMR reflectors:
DMR refectors consist of several regional servers that are connected with each
other via a superordinate network. 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.
Net organization (CCS7):
The many refectors, repeaters and also Dongle users (the DV4mini is a Dongle
too) require a structured organization, so that the network technology works
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 web site xrefector.net and request a 7 digit number to
be assigned. This number is then entered into the specifc feld on the DV4mini
software. This facilitates reporting into the network and conduct worldwide
contacts in D-Star or DMR and the use of D-Star/DMR bridges.
Operating modes:
Digital ham radio repeaters are connected via refectors. This allows for worldwide
connections from one repeater to another.
With a hotspot (DV4mini) one creates ones own connection to this refector
network and gets access to all connected ham radio repeaters.
The hotspot includes a low power 70 cm transceiver. All voice communications on
the connected refector will be transmitted by the hotspot on 70 cm and one can
listen with a digital radio and of course also transmit.
Thus a hotspot is an ideal solution in one has no good access to a digital repeater
e.g. inside buildings,
due to distance or at a vacation spot.
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