Microbit RRC-1258 MkII(s) Uživatelský manuál stáhnout pdf (Strana 28)

122

Computers in Amateur Radio

D-Star system

layout

We will begin with

the D-Star repeater.

Unlike an analogue

repeater which

operates on a

particular band

with an individual

callsign such as

GB3QQ, a D-Star

repeater can be

built according to

the keeper’s

requirements and

be active on

several bands with

the same callsign.

GB7CD will be

used as an exam-

ple. At present it

only has the 70cm (B port), but Fig 10.3 illustrates a full repeater

stack setup.

As you can see from the illustration, a fully loaded D-Star re-

peater can be constructed with four ports. It can also be built with any

combination of the four ports. Funding, the frequencies available to

the builder and any licencing restrictions in his or her particular area

will determine how complete a D-Star repeater is.

Assuming a

complete setup,

a user would be

free to access the

system on any of

the bands avail-

able within the

repeater. Across

the world it has

been decided

that wherever

possible the ‘A’

port will carry

23cm (1.2GHz)

voice traffic, the

‘B’ port 70cm

(430-440MHz)

Fig 10.4: Satoshi

node adaptor

board.

Fig 10.3: Icom

D-Star Repeater.

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