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Thread: maximum distance from dish to decoder

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    Default maximum distance from dish to decoder

    Hello,
    I use two dishes (large original Austar ground mounted) for TV reception in my home in country Queensland. One is Austar pay TV and the other is Optus aurora "free to air" TV. Each has two services attached to its dish. I would like to move a service from the house to another building on my property. Have any members had experience with doing this? What is the maximum distance an adequate signal can be sent to a decoder along a standard cable? Is using a line booster possible and available. I have not measured the exact distance yet but it could be 60-70 metres. Is a premium cable available or required for this application. I would appreciate any information anyone can provide.
    Thank you, Normanby.



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    I have seen a Guy with a 100m roll of RG6 from dish to Set Top Box, & appeared to be Ok,

    Line Amplifiers amplify the "noise" too, so I would avoid them unless absolutely necessary
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    My C-band dish is using prob 35-40 with no issue. Make sure you use good quality RG6 Quad shield cable.

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    Quote Originally Posted by OSIRUS View Post
    ...Line Amplifiers amplify the "noise" too, so I would avoid them unless absolutely necessary
    If you go down that road, placing the amplifier at the antenna end will amplify the signal before the introduction of line noise. Noise will still get amplified, but the ratio will be lower, so keep that in mind if necessary.

    In the end, if you don't try, you will ever know, but I think a good 100m RG6 Quad Shield cable would probably be an upper limit to go by.


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    It depends on what signal levels you have to begin with from the LNB.

    The longer the cable, the greater the loss, however, generally around 60m is ok. Longer cable runs are possible, once again, depending on what levels you start with.

    Yes, line level amps will help overcome signal loss, but ensure you do what OC recommends... putting the amp at the dish end.

    Try it first without an amp.

    You need a good-quality, low-loss cable such as RG6 Quadshield, or for even lower loss, RG11 Quadshield.

    If any of the cable is to run underground, it's best to use the 'flooded' type, to prevent water/moisture ingress, however, in most cases, non-flooded (standard) cable is ok if it's in conduit.

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    I have done 250m from dish to receiver

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    Quote Originally Posted by irdeto2engineer View Post
    I have done 250m from dish to receiver
    Which proves the point.. start with a good signal from the LNB.

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    I would like to move a service from the house to another building on my property
    or just put up another dish

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    Quote Originally Posted by porkop View Post
    or just put up another dish
    I would have to agree. At some point the lack of signal quality and the cost of cable would become a case of diminishing returns on investment. A new installation would make better sense.
    OC

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    Thank you for all the information provided. I have measured the distance at 68 metres so I am going to purchase some RG11 flooded cable to see how it goes above ground first. As the route is over driveways I will be putting it in a trench permanently if the reception is satisfactory. This will be the Austar service so I would like to move one decoder so I don't need to get another Austar dish installed. I have a smaller roof dish I will probably install to provide an Optus aurora service for the free to air channels. Is it ok to put the flooded type cable directly in the trench (in sand) as conduit would add to the cost.
    Thank you , Normanby.

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    Normanby,

    If you are just planning to move an Austar decoder between the two buildings, then I'd agree that the simplest and certainly the cheapest option, would be a separate dish on the other building.

    Both Austar and Aurora are from the same satellites C1/D3 so you can use the same dish for both.

    Yes, you can bury the flooded cable without conduit, but it's more likely to be damaged and required to be dug up for replacement.

    The conduit would probably be the cheapest part, as flooded RG11 Quadshield and connectors for it aren't cheap.

    Having a separate dish will also enable you to easily use a dual LNB to run both the standard Austar box and a separate box for Aurora simultaneously.

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    I have my cband setup running from the backyard using direct buried RG6 for the first 10m running thru the shed then in conduit to the house. Total run of cable is over 87m in length and with no amplification. Been happily working like that for over 9 years and signal strength has not degraded.

    Like everyone says use good quality cable and it should be fine.

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    I have done 400m but we used RG11. RG6 had too much signal loss over that distance.
    iam a bogan

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    Quote Originally Posted by mtv View Post
    Which proves the point.. start with a good signal from the LNB.
    Or use a larger dish to start with so that you have a lot of attenuation.

    But yes it can be done I used Commscope Quad shield that was laid in conduit and buried about 6 inched into the soil for a clients 5 acre estate

    We setup 4 dishes with 5 satellites 4 cband and one ku band through multicswitches to 16 satellite recievers.

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    Default Coax reference table

    Quote Originally Posted by mate View Post
    I have done 400m but we used RG11. RG6 had too much signal loss over that distance.
    Just for reference purposes:



    excerpt from:

    OC

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    Thank you all for the useful advice and comments. As I have a new spare roof mount dish not used for three/four years since I installed my house optus aurora service I will look at mounting this before I buy cable for an underground run from the Austar dish. Please someone confirm that I can plug in a working Austar service with the genuine decoder and card which is one of two used in my house to a new dish & LNB on the other building. I have a couple of problems which I will solve first. One is the roof is corrugated asbestos fibro so I will look at mounting on a facia board. Also I have to find the spare cable, dish mounts, connectors, LNB, and pliers etc I put somewhere safe 3/4 years ago. Could not find them today but there is always tomorrow.
    I appreciate all the advice and I will post a reply when the connection is successfully completed.
    Regards, Normanby

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    Quote Originally Posted by Normanby View Post
    Thank you all for the useful advice and comments. As I have a new spare roof mount dish not used for three/four years since I installed my house optus aurora service I will look at mounting this before I buy cable for an underground run from the Austar dish. Please someone confirm that I can plug in a working Austar service with the genuine decoder and card which is one of two used in my house to a new dish & LNB on the other building. I have a couple of problems which I will solve first. One is the roof is corrugated asbestos fibro so I will look at mounting on a facia board. Also I have to find the spare cable, dish mounts, connectors, LNB, and pliers etc I put somewhere safe 3/4 years ago. Could not find them today but there is always tomorrow.
    I appreciate all the advice and I will post a reply when the connection is successfully completed.
    Regards, Normanby
    Yes Normanby,
    Providing the dish is pointing to Optus C1/D3 and you have the same LNB as what the setting in the decoder is (should be 10700) you can use your genuine Austar decoder and card anywhere in Australia.

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    A booster should be as close to the dish as possible, but you stated it is a ground mount so there would probably not be any powerpoints near the dish. I would probably recomend a larger dish for stronger siginal/quality and it should also be less likley to drop out due to bad weather. I would also recomend that if you are laying cables underground to add an extra cables for future use like on a Mystar or for Satellite internet.

    Cheers,
    Nando.

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    Quote Originally Posted by nando View Post
    A booster should be as close to the dish as possible, but you stated it is a ground mount so there would probably not be any powerpoints near the dish.
    Amps can be remotely powered.. line amps, powered by the decoder.

    The separate dish is still the best option.... not requiring any long cable runs, trenches, etc.. and MUCH cheaper than the alternative.

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    True. I was thinking of a powered multiswitch, must of had too many beers :P

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