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Two HD Boxes off One HD Dish?

AtlantaHD
04-24-2006, 11:16 AM
I have a HD reciever and want to add a new one downstairs, will I need another dish? or can they run off one?

anyone know?

(i have the 3lnb dish and off air for locals)

rbinck
04-24-2006, 11:18 AM
You can run up to 4 receivers with a 3LNB Hd dish. With the addition of multiswitches, there is not any realistic limit.

DWBJ
04-24-2006, 05:44 PM
I am running 5 HD units off of one dish. Works fine.

directvfreak
04-24-2006, 07:27 PM
I have 4 HD units.

AtlantaHD
04-25-2006, 10:20 AM
If you look closely youíll see the term LNB (Low Noise Blockdown) used.* So one of these guys has a three (3) LNB feeding 4 receivers.** This is what I was asking you about the other day.* How many LNBs does your receiver have?** You should have one LNB or signal source for each receiver.
*
There are at least three things going on between your receiver and the LNB (Dish).* 1) Power, 24 VDC is supplied to the LNB from the receiver.* It may not be a good idea to supply multiple power supplies to one LNB.* 2) Signaling, there may or may not be signaling between the receiver and the LNB.* Installing a splitter may interrupt the signaling.* And 3) TV signals, the LNB converts the incoming signal to a format that is compatible with the receiver.* The signal strength is such that it is high enough to allow some loss and still provide an acceptable signal to the receiver but not to high as to be too much for the receiver to handle. *When you install the splitter there is a 3 to 3.5 db loss at the splitter.* When you combine this with the line loss (cable losses due to length) and connection losses you may or may not have sufficient signal strength at the receivers.* *I spoke to an engineer who designs satellite dishes and he said if you provide the make and model of the dish and receivers he will tell you if you need any special splitters or devices. *Otherwise itís a trial and error situation.*

directvfreak
04-25-2006, 01:33 PM
If you look closely youíll see the term LNB (Low Noise Blockdown) used.* So one of these guys has a three (3) LNB feeding 4 receivers.** This is what I was asking you about the other day.* How many LNBs does your receiver have?** You should have one LNB or signal source for each receiver.
*
There are at least three things going on between your receiver and the LNB (Dish).* 1) Power, 24 VDC is supplied to the LNB from the receiver.* It may not be a good idea to supply multiple power supplies to one LNB.* 2) Signaling, there may or may not be signaling between the receiver and the LNB.* Installing a splitter may interrupt the signaling.* And 3) TV signals, the LNB converts the incoming signal to a format that is compatible with the receiver.* The signal strength is such that it is high enough to allow some loss and still provide an acceptable signal to the receiver but not to high as to be too much for the receiver to handle. *When you install the splitter there is a 3 to 3.5 db loss at the splitter.* When you combine this with the line loss (cable losses due to length) and connection losses you may or may not have sufficient signal strength at the receivers.* *I spoke to an engineer who designs satellite dishes and he said if you provide the make and model of the dish and receivers he will tell you if you need any special splitters or devices. *Otherwise itís a trial and error situation.*


No, each LNB is used to recieve signals from 1 satellite. 3 LNB dishes recieve signals from 3 satellites. (101,110,119). I actually use 6 connctions. A 3 LNB dish can be used to supply signal to at least 48(I saw somewhere a company did this just for the heck of it) and I suppose more. A multiswitch limits the power so you can't overload the LNBs unless something in your setup is messed up.


To sum it up, you can connect as many receivers as you need to a 3 LNB dish.