November 27, 2010Ottawa D-STAR Symposium

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Linking and RoutingLinking and Routing

Ken VA3KA

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Linking and RoutingLinking and Routing

Call Sign Routing vs Linking What are these features? How do they work? When do you use them? Issues Radio programming

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Call Sign RoutingCall Sign Routing

Early feature of D-STAR Network – before linking was available

Allows you to contact a station anywhere on the network without knowing where they are

Routing will be to the last repeater where the destination station has transmitted on

Some issues related to call routing to keep in mind.

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Issues – Call Sign RoutingIssues – Call Sign Routing Destination station must have recently transmitted Call sign updates may take a while – so if the

destination station has changed repeaters the system may not find the call in the right spot!

Destination station must “call capture” Not possible to know if the destination repeater is in

use – you could come in right on top of a QSO in progress

You will not hear any users on the destination repeater except those that “call capture” you

Must return UR to CQCQCQ when done!

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LinkingLinking

Generally preferred usage Can link to a repeater (any module) or a reflector Ability to monitor the destination without

interference Call capture not required at destination Anyone on frequency will be heard

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Issues - LinkingIssues - Linking

You need to know which repeater (and module) the destination station is monitoring (if you are looking for a specific station)

Once you successfully link – you must return your UR to CQCQCQ!

The same when you issue the unlink command

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Radio Programming 1Radio Programming 1

Call Sign Routing: UR: The destination callsign RPT1: The local repeater (i.e. VA3ODG B) RPT2: The local gateway (i.e. VA3ODG G)

IMPORTANT: Return UR to CQCQCQ when done!

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Radio Programming 2Radio Programming 2

Linking (Repeater/Reflector): UR: The destination repeater/module followed by L in

the 8th space (i.e. VE3YYZBL or REF016CL) RPT1: The local repeater (i.e. VA3ODG B) RPT2: The local gateway (i.e. VA3ODG G) If successful you will see a message returned from

destination repeater i.e. Connected to VE3YYZ B

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Radio ProgrammingRadio Programming 3 3

Linking (Repeater/Reflector):Once the link is established, remember to change the UR to CQCQCQ!

To unlink change the UR to the following: -------U (7 spaces then U) After successful unlink message received remember to

change the UR back to CQCQCQ