Sat feeds to main transmitters

**Analoguesat** · 15-11-2008

I was out and about this afternoon.Found myself up near the Selkirk main transmitter and noticed 3 massive satellite dishes in the grounds. They have to be at least 2m in diameter and are pointing to at least 2 different satellites.

Any ideas as to which satellites they are pointing at and why such whopping great monstrosities are required ?

(Im jealous and want them in the garden!)

**rolfw** · 15-11-2008

Must be to deal with any potential rain fade Ross.

**Analoguesat** · 15-11-2008

Hmm suppose it does rain a lot up here!

Found a picture - two of the dishes are pointing out to the south east but for some reason one is pointing south west!

There was also a fourth one on the building when this was taken, although that may just have been hidden from view today

**Tsiklon** · 15-11-2008

Channel 5 in PowerVu is on 27W (11665MHz).

Also on 16E with others as data channels (11634, 11659, 11680).

**Channel Hopper** · 15-11-2008

2m is not 'massive'.

Are they receive only dishes or ones for both receive and transmission ?

**Analoguesat** · 15-11-2008

No idea CH - wasnt close enough to see. Carol tells me theres a path runs fairly close so I'll have a wander up and have a look one day over the winter. (Will have my binocs with me!)

**Channel Hopper** · 15-11-2008

Originally Posted by Analoguesat

No idea CH - wasnt close enough to see. Carol tells me theres a path runs fairly close so I'll have a wander up and have a look one day over the winter. (Will have my binocs with me!)

Receive only for a cable station is standardised with 2m to 2.4m dishes, not just for rain fade, but the requirements for sending non standard encrypted data.

Once you are up to a 7/8 FEC to covering transmission losses, the dish size can increase by some 60%. Add to that the correct cross polar rejection, HD broadcasts, MPEG 4:2:2 transmissions and a few others to boot, 2m dishes are small fry.

A pity the cable company eventully sends the stuff to your subscriber box down a manky bit of pipe, using pits and splitters from the US days of VHF, with scant regard to signal strength as it arrives, nor how it gets from there to the screen.

**Analoguesat** · 15-11-2008

Theres no cable round here - the nearest is the best part of 40 miles away

- this has to be all for retransmission off the mast.

Therefore this install is likely receive only.

**satelliteman** · 15-11-2008

You mentioned a forth Ross; but I can only see three. It's not been swipped already has it

**Analoguesat** · 15-11-2008

Not guilty

Look at the row of three and its just about visible above and to the right of the third one. (Mounted on the building)

**satelliteman** · 15-11-2008

See it now.

Any idea of the dish manufacture/type out of interest.

moojuice · 15-11-2008

Having spoken to a man who installs these dishes, they now use 2 dishes for DAB feeds into the local transmiters, one main dish for the main feed and another dish on a backup satellite location, just incase its ever needed. Reduncancy from the outset

***wod*** · 15-11-2008

Originally Posted by satelliteman

See it now.

Any idea of the dish manufacture/type out of interest.

prodelin, andrews i would have thought ?

is precision dishes still made ?

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Sat feeds to main transmitters Discuss your wife's objections to the fifth dish going up or your concern that there's far too little violence on the box these days. You can also introduce yourself here or just chat about anything. Remember, no keys or files allowed.

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