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Most homes have more than one television so it is pretty common to have more than one fta receiver connected to the same dish antenna system.
Connecting multiple receivers to the same dish antenna system can cause problems such as these:
Erratic receiver operation.
Freezing channel(s) or Freezing Receiver Menus.
Unexplained loss of satellite or transponder signal.
Transponder signals that jump rapidly from a high signal to a very low signal.
Transponders that display a signal or part of a signal when the lnb power is turned OFF.
Missing channel(s) or transponder(s) in a scan.
The above list of problems can be caused when legacy type lnb(s) are used in the antenna system. Legacy lnbs use voltage switching to change between horizontal and vertical transponders.
To correctly run a legacy lnb to two or more receivers, you need to have a lnb with at least two output ports. The 14 and 18 volt inputs of the multiswitch should be connected to each of the lnb ports. The receivers are then connected to the multiswitch.
One purpose of the multiswitch is to isolate the 14 volt and 18 volt switching of the receivers.
Sometimes these switches do not work or there is a problem with the lnb that allows the 14 and 18 volt switching of the receivers to mix. This voltage mixing is what causes the problems listed above.
I think band stacked lnbs are better technology than the legacy lnbs. Bandstacked lnbs do not use voltage to switch between the horizontal and vertical transponders. Band stacked lnbs put all of the horizontal and vertical transponders in the receiver's intermediate frequency range of about 950 MHz to 2150 MHz.
Longer runs of coax may be used with bandstacked lnbs because they are not dependent on voltage to change the transponder polarities.
The only problem with bandstacked lnbs is they are not widely used in North America fta systems, so they are sort of hard to find, especially for c band.
Legacy type lnbs that use voltage switching are more common in fta antenna systems.
The best way to check and to isolate problems in a multiple receiver antenna system is to start at the dish antenna.
If you have receiver problems, remove the power from everything in the system. Then take a receiver that is not working correctly out to the dish and connect it straight to a lnb that is in the antenna system. Be sure to remove anything else that is connected to the lnb, Power up the recievr and check it for problems.
If the problems disappear when the receiver is connected straight to the lnb, and the lnb has nothing else connected to it, then the receiver is ok, and the problem is in the antenna system.
If the problems still exist with the receiver connected straight to the lnb then check for incorrect receiver settings.
If the receiver settings are correct, then the problem is probably in the lnb or the receiver.
Be sure to check every lnb in a multiple lnb system.
Most of the time, the receiver or its firmware is not the culprit when you have some of the problems mentioned here.
Legacy lnbs are known trouble-makers in fta systems that have multiple receivers connected to the same antenna system. EB
Connecting multiple receivers to the same dish antenna system can cause problems such as these:
Erratic receiver operation.
Freezing channel(s) or Freezing Receiver Menus.
Unexplained loss of satellite or transponder signal.
Transponder signals that jump rapidly from a high signal to a very low signal.
Transponders that display a signal or part of a signal when the lnb power is turned OFF.
Missing channel(s) or transponder(s) in a scan.
The above list of problems can be caused when legacy type lnb(s) are used in the antenna system. Legacy lnbs use voltage switching to change between horizontal and vertical transponders.
To correctly run a legacy lnb to two or more receivers, you need to have a lnb with at least two output ports. The 14 and 18 volt inputs of the multiswitch should be connected to each of the lnb ports. The receivers are then connected to the multiswitch.
One purpose of the multiswitch is to isolate the 14 volt and 18 volt switching of the receivers.
Sometimes these switches do not work or there is a problem with the lnb that allows the 14 and 18 volt switching of the receivers to mix. This voltage mixing is what causes the problems listed above.
I think band stacked lnbs are better technology than the legacy lnbs. Bandstacked lnbs do not use voltage to switch between the horizontal and vertical transponders. Band stacked lnbs put all of the horizontal and vertical transponders in the receiver's intermediate frequency range of about 950 MHz to 2150 MHz.
Longer runs of coax may be used with bandstacked lnbs because they are not dependent on voltage to change the transponder polarities.
The only problem with bandstacked lnbs is they are not widely used in North America fta systems, so they are sort of hard to find, especially for c band.
Legacy type lnbs that use voltage switching are more common in fta antenna systems.
The best way to check and to isolate problems in a multiple receiver antenna system is to start at the dish antenna.
If you have receiver problems, remove the power from everything in the system. Then take a receiver that is not working correctly out to the dish and connect it straight to a lnb that is in the antenna system. Be sure to remove anything else that is connected to the lnb, Power up the recievr and check it for problems.
If the problems disappear when the receiver is connected straight to the lnb, and the lnb has nothing else connected to it, then the receiver is ok, and the problem is in the antenna system.
If the problems still exist with the receiver connected straight to the lnb then check for incorrect receiver settings.
If the receiver settings are correct, then the problem is probably in the lnb or the receiver.
Be sure to check every lnb in a multiple lnb system.
Most of the time, the receiver or its firmware is not the culprit when you have some of the problems mentioned here.
Legacy lnbs are known trouble-makers in fta systems that have multiple receivers connected to the same antenna system. EB