Log in
Register
Menu
Log in
Register
Home
What's new
Latest activity
Authors
Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Current visitors
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Sky Digital BSkyB, Freesat & Saorsat support forum
Sky
BBC channels frequency changes on Astra 2 due on 18/10/10
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Channel Hopper" data-source="post: 716770" data-attributes="member: 175144"><p>It is almost certain the downlink equipment (either TWTAs or SSPAs) is fixed at manufacture as the supplier - Boeing in this case , model BSS-376HP - is built to contract for SES, and the orbital slot/ground footprint and eastimated lifetime is known before build.</p><p></p><p>Any onboard equipment that allows adjustment of footprints, frequencies or cross-strapping would add to the complexity, weight and cost of the satellite. If it deemed not necessary during planning, then it will be left out.</p><p></p><p>A small article on the budgetary analysis of communication payloads.</p><p></p><p>_http://www.communications-center.com/pdf/SBiQ499.pdf</p></blockquote><p></p>
[QUOTE="Channel Hopper, post: 716770, member: 175144"] It is almost certain the downlink equipment (either TWTAs or SSPAs) is fixed at manufacture as the supplier - Boeing in this case , model BSS-376HP - is built to contract for SES, and the orbital slot/ground footprint and eastimated lifetime is known before build. Any onboard equipment that allows adjustment of footprints, frequencies or cross-strapping would add to the complexity, weight and cost of the satellite. If it deemed not necessary during planning, then it will be left out. A small article on the budgetary analysis of communication payloads. _http://www.communications-center.com/pdf/SBiQ499.pdf [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Sky Digital BSkyB, Freesat & Saorsat support forum
Sky
BBC channels frequency changes on Astra 2 due on 18/10/10
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top
