Astra 2 - Eurobird Hotbird etc.

danjo-xx

Trying to get my head round how channel listing work.

I think channels are made up in groups and each group is called a transponder?

are they then given a bird name for each transponder?

is that it or does it get even more complicated for this poor soul (93)

Peter Rhea

Maybe you're just making things complicated, what listing are you referring to?

Apogee

Basically, each satellite contains multiple transponders. Each transponder receives, amplifies and retransmits a signal (a frequency range) which can contain a multiplex of many digital channels (or alt. one analogue channel).

https://www.youtube.com/watch?v=AaDvgT838Qk

Johnboy1951

danjo-xx wrote: »

Trying to get my head round how channel listing work.

I think channels are made up in groups and each group is called a transponder?

are they then given a bird name for each transponder?

is that it or does it get even more complicated for this poor soul (93)

Satellites have names

Each satellite has multiple transponders

Each transponder carries multiple channels (usually)

Each channel is tuned in to view/hear what is broadcast, by tuning in the transponder on which it is carried.

That is as I understand it ....

polyfusion

You forgot that each orbital position may have several satellites in its constellation, for example, Astra 2 at 28.2E consists of 2A, 2B and 2D satellites, all with differing footprints (or beams).

It's quite important to understand about these differing footprints (if you're interested in transponders, frequencies, etc.), as some orbital positions may have some satellites that are available, and some that are not, for example, Eurobird at 28.5E has a few beams directed over us, but another beam directed at Nigeria.

danjo-xx

Johnboy1951 wrote: »

Satellites have names

Each satellite has multiple transponders

Each transponder carries multiple channels (usually)

Each channel is tuned in to view/hear what is broadcast, by tuning in the transponder on which it is carried.

That is as I understand it ....

So Sky is on the Astra 2D satellite and other channels can be on Eurobird 1 satellite etc etc.

Seems to be a lot of tv satellite's up there I thought there was only a few satellites in general or is tv broadcasting from satellite's just a small part of a few major satellites.

Peter Rhea

So it's a history of communications satellites you're after, rather than help with specific listings?

Wikipedia's not a bad place to start, I suppose.

brian ireland

>>>>>

Apogee

danjo-xx wrote: »

Seems to be a lot of tv satellite's up there I thought there was only a few satellites in general or is tv broadcasting from satellite's just a small part of a few major satellites.

TV makes up a major part of the total number of satellites. There are a very large number of satellites in orbits with a large array of uses - including the tracking of wildlife.

danjo-xx

Peter Rhea wrote: »

So it's a history of communications satellites you're after, rather than help with specific listings?

Wikipedia's not a bad place to start, I suppose.

not really just a general overview of things, I thought that was obvious.

Kristopherus

You would probably get a thousand overviews if you hang around long enough. But Wikipedia really is the first place you should go to get the very best overview. DYOR like the rest of us have done and you'll get best value from it.

danjo-xx

Apogee wrote: »

TV makes up a major part of the total number of satellites. There are a very large number of satellites in orbits with a large array of uses - including the tracking of wildlife.

thanks Apogee for those links I see Telstar is still up there if its the original, and I still love that tune, Telstar by the Tornadoes.

rlogue

Yes recorded in his kitchen about three years before he murdered his landlady :eek:

dxhound2005

This is a picture of what is called the satellite arc showing broadcasting satellites which can be received in this part of the world (don't know about villages at the end of the universe). Most people will have a fixed dish pointing at 28 East but a motorised dish can be moved to pick up about 30 of these without too much difficulty.


http://www.satellites.co.uk/forums/attachments/forum216/34708d1304076900-satellite-tv-uk_iss4_draft4.jpg.att

A number of sites like Flysat show the list of transponders and broadcasters on each satellite and their coverage area.

http://www.flysat.com/satlist.php

Ronnie Raygun

danjo-xx wrote: »

not really just a general overview of things, I thought that was obvious.

How general do you want to get? What about natural satellites like the moon (people have bounced signals off it too)?

Johnboy1951

dxhound2005 wrote: »

This is a picture of what is called the satellite arc showing broadcasting satellites which can be received in this part of the world (don't know about villages at the end of the universe). Most people will have a fixed dish pointing at 28 East but a motorised dish can be moved to pick up about 30 of these without too much difficulty.


http://www.satellites.co.uk/forums/attachments/forum216/34708d1304076900-satellite-tv-uk_iss4_draft4.jpg.att

"You are not logged in or you do not have permission to access this page." :mad:

A number of sites like Flysat show the list of transponders and broadcasters on each satellite and their coverage area.

http://www.flysat.com/satlist.php

Captain Vegetable

danjo-xx wrote: »

I see Telstar is still up there if its the original, and I still love that tune, Telstar by the Tornadoes.

It's not the original & that song is Shit, even the guys who played on the recording thought so.

Apogee

Telstar

https://www.youtube.com/watch?v=7h6nlcv0OvM

Telstar

https://www.youtube.com/watch?v=SQdDjy1UtW4

Apogee

Johnboy1951 wrote: »

"You are not logged in or you do not have permission to access this page." :mad:

Apogee

Boeing defense also do a nice A4 PDF version of all commercial geosynch sats around the globe:
http://www.boeing.com/defense-space/space/bss/launch/980031_001.pdf

danjo-xx

Captain Vegetable wrote: »

It's not the original & that song is Shit, even the guys who played on the recording thought so.

whatever sinks your boat Captain:D