hi,hope you can help me..i live in spain and my problem is,every night about 8 pm i lose a lot of my channels and they come back about 11.30 pm,i am on a 1.9 dish with a quad invacom lnb (shared with 3 other houses) they all have the same problem,also i have 2 neighbours with their own dishes and they are having the same problem,but other people near us are not getting any problems can you help please
loss of signal same time every night
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Watch your signal strength when you start losing those channels. If the signal strength increases, then some kind of interference is overpowering the satellite signal in your area. Maybe an internet data dump from a local business the same time everynight? If your satellite signal disappears when you start losing those channels, that would be interesting since others in the local area are still receiving the satellite signals. Good luck.
The dish position and height can shelter the LNBF from terrestrial interference.
Also note: MPEG2 DVB receivers have been known to output voltage on the voltage on the ground and cause interference with other receivers connected to the same switch or LNBF. IS it possible that one of your neighbor's watch a certain transponder or turn on their set during this time?
Example: I have two receivers that do not play well together. If I place one receiver an a specific transponder, the other receiver will not display channels from another transponder. The receiver shows Signal Quality, but the channels will not display. Sometimes a different switch, grounding connection or LNBF type may make a difference.
If your neighbors are willing to participate in a test.... next time your system goes out, one by one disconnect the coax from each of the neighbor's STB and see if your channels return.
Also note: MPEG2 DVB receivers have been known to output voltage on the voltage on the ground and cause interference with other receivers connected to the same switch or LNBF. IS it possible that one of your neighbor's watch a certain transponder or turn on their set during this time?
Example: I have two receivers that do not play well together. If I place one receiver an a specific transponder, the other receiver will not display channels from another transponder. The receiver shows Signal Quality, but the channels will not display. Sometimes a different switch, grounding connection or LNBF type may make a difference.
If your neighbors are willing to participate in a test.... next time your system goes out, one by one disconnect the coax from each of the neighbor's STB and see if your channels return.
AV, shouldn't the receivers be turned OFF at the switch and/or disconnected from the power source before cable removal? Of course, that's the neighbor's box, eh? heehee.........
thanks for your advice,i will try your sugestions as soon as i can and will reply,my 1.9 dish recieves direct from a satillite and the other 2 dishes recieve from a transmitter,their is a computer shop in the area that provides a wifi connection,also are you saying to earth my dish and lnb...thanks again
Or have the person who changes channels at 8PM every day switch to a different transponder.
If the dish and or the coax cables are not connected to earth (grounded) the voltages from each receiver could interfer as suggested in the previous post. Connecting to ground may eliminate this problem.... Removing each coax cable one at a time will let you know if the problem is receiver / voltage related.
we grounded the lnb but made no difference,we think its interference from somewhere else but dont know where,the odd thing is 1 of the houses on the quad lnb doesnot seem to get any problems,(did not realise this when making my original post) and 1 of our neighburs that was getting a problem seems to be working ok ?....we are i think pointed at the astra 1a satillite
update..as i said 1 of the 4 does not get a problem, and another owner is away at the moment so we disconnected him from the lnb,then we disconnected another cable and the result of this was that the person with no problem lost his connection so we connected back up and disconnected another coax and the same person lost his connection again,i phoned the sat disc man but he says its not the problem,but surely if a person loses his signal when disconnecting someone elses cable thats got to be a lnb fault , would you agree?
Could be a power issue from the receivers. So disconnecting another receiver that is powering the LNBF kills the other port that isn't being powered properly. E.g. there might be voltage to switch polarity, but not enough mA to power the LNBF.
Ideally you would turn off all receivers, unplug them and test each port with known good receiver / cable setup. Then, assuming the LNBF ports check out ok, re-introduce the other receivers one at a time.
quad lnb question
if i use a invacom quad lnb does all 4 boxes need to be connected for it to work properly (i ask this becouse we have had problems where every evening we lose a lot of channels but come back later) the person who has the box that is not connected has just come back to his house and connected his box and all are channels came back on
if i use a invacom quad lnb does all 4 boxes need to be connected for it to work properly (i ask this becouse we have had problems where every evening we lose a lot of channels but come back later) the person who has the box that is not connected has just come back to his house and connected his box and all are channels came back on
The Invacom Quad has 4 individually controlled outputs that are designed to be operated independent of one another. It has been posted in another thread regarding your signal issue..... I believe that there is an issue between the connected receivers that possibly is related to voltages conflicting with other receivers. You might try swapping to another quad LNBF or grounding (connecting to earth) the four coax lines before running to each receiver.
Some brands of receivers do not play well together!
Some brands of receivers do not play well together!
The 8 oclock thing should be a clue. Do any of the four turn on at 8? If so maybe there is an amplifier overloading the lnb or perhaps a return loss problem.
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