ARLA/CLUSTER: Arquitectura do sistema Distar em imagens.

[João Gonçalves Costa]

Caros Colegas,

O exemplo aqui apresentado, facultado pela ICOM Canadá para 1.200 MHz, aplica-se de igual forma em 2m e 70cm.

No entanto, e especificamente para 1200 MHz, existem disponíveis repetidores; para voz e dados de baixo debito e repetidor de dados de alto debito.

Este ultimo tipo de repetidor, permite todo o tipo de actividades que envolvam altos débitos de dados; desde a difusão de imagens em directo, troca de ficheiros complexos, etc., etc., até acesso integrar á Internet via rádio.



        D-STAR repeater system

The D-STAR repeater is composed of a repeater controller, digital voice
repeater, digital data repeater(only to 1200 MHz), 10GHz microwave relay and the Internet gateway PC. For the signal is digital data, no information is lost due to conversion and multiple repeater relays are possible in this system. The D-STAR system repeater can perform 3 relay functions as shown in the following figures.





Single repeater
[http://www.icomcanada.com/products/amateur/ID-1/01.jpg]
The D-STAR repeater operates similar to existing analog repeater. That is a simple relay of transmit and receive communication in 1.2GHz band.

Microwave link
[http://www.icomcanada.com/products/amateur/ID-1/02.jpg]
When D-STAR repeaters are connected via 10GHz microwave, the D-STAR system transfers a received data to another repeater site. You can also make a CQ call to a specified repeater area.

Internet gateway relay
[http://www.icomcanada.com/products/amateur/ID-1/03.jpg]
When D-STAR repeaters are connected with the Internet gateway, the D-STAR system relays the received data over the Internet. Microwave links and Internet gateways can be combined even during one contact. So your message will get through virtually to anywhere in the D-STAR system.


Fonte: ICOM Canadá.
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