Paulcl
01-17-04, 05:55 PM
With the risk of getting a bad reputation around here... (see my thread "DishNetwork self install - need design help" for background info).
Can someone please explain to me the nitty gritty technical details of how the legacy SW64 switch operates?
Specifically, what signals/voltages are present on the LNB "A" and "B" ports at any one time?
I need to purchase a non-E* FSS linear-polarized LNB for the 105/121 satellites. Reason being is I will be mounting it on a non-E* dish which uses 40mm LNB mounts ONLY. There is no way I can mount an E* lnb or seperately add an E* dish. I can not add a second dish and I can not replace my existing dish.
What I have found so far about the SW64 is this matrix:
SW64 for legacy lnb's
13 SW64 Dish 1A (odd) 13V
14 SW64 Dish 1B (even) 18V
15 SW64 Dish 2A (odd) 13V
16 SW64 Dish 2B (even) 18V
17 SW64 Dish 3A (odd) 13V
18 SW64 Dish 3B (even) 18V
I don't know what the numbers in the first column mean.
I am confused by the term "odd" and "even". Usually, at least in FTA Mpeg lnb's which I am familiar with, 13V and 18V is used to set/toggle the LNB's polarity:
18V = Horizontal or Left Hand Cir. polarity
13V = Vertical or Right Hand Cir. polarity
This has nothing to do with odd/even transponders unless the odd/even transponders are deliberatly arranged in this fashion to correspond to the polarity. Could it be? :-)
If the SW64 continously provides 13V on ports "A" and 18V on ports "B" than it is conceivable that a SINGLE FSS linear LNB with "Twin Output" will work just fine. Each output being locked on to a specific polarity which the SW64 can switch to the receiver attempting to tune that particular satellite and transponder. Am I right so far?
Please help me with this problem otherwise I will need to abandon this project and be forced to stick with the Kable Co (ugh).
Can someone please explain to me the nitty gritty technical details of how the legacy SW64 switch operates?
Specifically, what signals/voltages are present on the LNB "A" and "B" ports at any one time?
I need to purchase a non-E* FSS linear-polarized LNB for the 105/121 satellites. Reason being is I will be mounting it on a non-E* dish which uses 40mm LNB mounts ONLY. There is no way I can mount an E* lnb or seperately add an E* dish. I can not add a second dish and I can not replace my existing dish.
What I have found so far about the SW64 is this matrix:
SW64 for legacy lnb's
13 SW64 Dish 1A (odd) 13V
14 SW64 Dish 1B (even) 18V
15 SW64 Dish 2A (odd) 13V
16 SW64 Dish 2B (even) 18V
17 SW64 Dish 3A (odd) 13V
18 SW64 Dish 3B (even) 18V
I don't know what the numbers in the first column mean.
I am confused by the term "odd" and "even". Usually, at least in FTA Mpeg lnb's which I am familiar with, 13V and 18V is used to set/toggle the LNB's polarity:
18V = Horizontal or Left Hand Cir. polarity
13V = Vertical or Right Hand Cir. polarity
This has nothing to do with odd/even transponders unless the odd/even transponders are deliberatly arranged in this fashion to correspond to the polarity. Could it be? :-)
If the SW64 continously provides 13V on ports "A" and 18V on ports "B" than it is conceivable that a SINGLE FSS linear LNB with "Twin Output" will work just fine. Each output being locked on to a specific polarity which the SW64 can switch to the receiver attempting to tune that particular satellite and transponder. Am I right so far?
Please help me with this problem otherwise I will need to abandon this project and be forced to stick with the Kable Co (ugh).