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Tech Head - The Technology Section
Aligning an uplink dish?
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<blockquote data-quote="Channel Hopper" data-source="post: 822174" data-attributes="member: 175144"><p>That looks like one of the later Inmarsat telephone systems.</p><p></p><p>Normally the receiver on the system will have the beacon frequency of the satellite required and the dish will be peaked on that signal. It is only when the best downlink signal is received that the uplink will be enabled to carry out two way communication.</p><p></p><p>Owing to the nature of the differing satellite crosslinks (many of which will be opposite polarity for downlink/uplink, but there are circular polarised and even colinear systems ) and the risk of movement, it is not usually recommended to substitute equipment on the front end following set up</p></blockquote><p></p>
[QUOTE="Channel Hopper, post: 822174, member: 175144"] That looks like one of the later Inmarsat telephone systems. Normally the receiver on the system will have the beacon frequency of the satellite required and the dish will be peaked on that signal. It is only when the best downlink signal is received that the uplink will be enabled to carry out two way communication. Owing to the nature of the differing satellite crosslinks (many of which will be opposite polarity for downlink/uplink, but there are circular polarised and even colinear systems ) and the risk of movement, it is not usually recommended to substitute equipment on the front end following set up [/QUOTE]
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Tech Head - The Technology Section
Aligning an uplink dish?
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