DV Development Group DV4mini User Manual 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. One cannot
enter it manually. If several hotspots are used then different letters must
be used.
Location and QTH locator: They will be shown on the Xreflector page
D-STAR, DMR, C4FM and P25: select the mode you use
Power: Adjust the power output - see technical data
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