Why is this product so useful?
Up until now, DIRECTV customers who are limited to use of a single RG-6 line into any one area of their home were limited in the amount of programming they could distribute to a particular satellite drop. Most importantly to many of these customers was HD (high definition) programming which it broadcast on satellite 110 (SAT-C). With the use of the SS-212, DIRECTV customers can now take two downleads from a Phase III (triple LNB) dish, combine them onto a single line, then separate them back out to two lines at the receiver drop point. This ability to do this task is especially useful for DIRECTV customers who use HD DVRs (HD Tivo) receivers which require two lines to be able to use the features of the receiver completely.
Who needs this product?
DIRECTV subscribers who live in older homes where feeding another line is very difficult - or - customer in rental units where a single line is avialable for distribution of satellite signal. See below for installation setup.
Note: the SS-212 utilizes two lines from the dish, the other two lines are still available to connect additional receivers. Alternately, a 4 x N or 5 x N multiswtich can be used at the dish (N being the number of outputs), to which the SS-212 can be connected to two of those outputs, leaving the remaining outputs for additional receiver downleads.

ELECTRICAL ................ Typical ..............QC Limit
Mux31 Input Window .......................-27 to -47 dBm
Mux31 Pass band Gain
5 -750 MHz .................. 1 dB ..................... -3 dB
950 -1450 MHz ............. 2 dB .................... ±2 dB
1750- 2250 MHz ...............5 dB ................... ±2 dB
Input Return Loss
950-1450 MHz ................12 dB .................... 10 dB
Output Return Loss
5-2150 MHz ...................12 dB .................... 10 dB
dMux13 Input Window .....................-37 to -57 dBm
dMux13 Outputs
Receiver 1 ..............un-stacked Mux31 “Input A”
Receiver 2 ..............de-stacked Mux31 “Input B”
Input Return Loss
950-1450 MHz ................12 dB .................... 10 dB
Output Return Loss
950 -1450 MHz ..............12 dB .................... 10 dB