SW21, SW42 SW24 and SW34 Switches

[Q]

I believe this is why and is from Dish site.

Polarity

DISH Network signals travel in a circular pattern from the satellite to the dish. This is referred to as "polarity." Two different types of circular polarity are used: right-hand circular (13 volts) and left-hand circular (18 volts).



So one line carries each signal.

[impeyr]

Yes, I vaguely knew that. However, I am still confused. What happens if you connect the LNB directly to a receiver with only one cable, does the receive control the right and left switching, like the sw21?

[Q]

I am not 100% sure but I think it only comes into effect when using 2 or more tuners. It is important when the receivers try to access the same transponders.

[Stan Dev]

Originally Posted by impeyr

What happens if you connect the LNB directly to a receiver with only one cable, does the receive[r] control the right and left switching, like the sw21?

Yes. The receiver applies either 13 or 18 volts to its satellite input, depending on what channel it is tuned to. If that input to the receiver is a direct cable from an LNB, then the voltage tells the LNB which polarity to send on that cable.

A single-satellite multiswitch applies a constant 13V to one LNB input and 18V to its other LNB input, effectively "pinning" each cable from the LNB to always carry a particular polarity. In this case, the voltage from the receiver is used to tell the switch which LNB input (i.e., which polarity) to pass through to that receiver.

Also, the receiver selects which satellite (91 degrees or 82 degrees) to listen to by applying or not applying a 22 kHz tone on its satellite input. The voltage plus the tone from the receiver are used to tell a multi-satellite switch (e.g., SW44) which LNB input from which satellite to pass through to that receiver.

[Mr Crewcab]

Just to see if i understand this right could someone please let me know if i am in left field or what -

I have an sw44 for my hd 9242 and that will be connected to out #1 & #2.
I also have an sw34. If i connect in#h and in#v of the sw34 to out#3 & out
#4 of the sw44, can i connect 4 sd receivers to out#1 to out#4 of my sw34?

KevinR

[Q]

Kevin,

Actually you need to connect the lines from lnb to sw34 switch first; presumably from the 91 lnb. The 2 of the 4 four outputs from the sw34 switch go into the SW44 switch. The remaining 2 outputs from the SW34 switch can be used where only 91 programming is needed and the SW44 switch will have 4 outputs with 91/82.

[Mr Crewcab]

Mr Q,

Thank You for the info, one last question just out of curiosity are the 2 lnb's for 91 and 82 the same, the only difference being location or are they satelite specific?

[Q]

they are the same.

[Mr Crewcab]

Got it all installed, everything works great. thank you very much for the help, just one last question,
my 91 sig = 86% on trans 11
my 82 sig = 77% on trans 11
think its worth trying to fine tune ?

[Q]

Most of my 82 is in 90 range. Anything over 75 is pretty stable but higher the better when raining and other bad weather.

[Harryhoo]

I have read all the messages in this thread but must be dumb because I still can't figure out how to add a 5th output.

I currently have a 5200 & 9200 connected to a SW44 switch. Prior to having this installed I was using a Multi-Receiver Active Switch (provided up to 4 output for 91 satelite). Is there a way to use this Multi Switch to add a 4700 receiver or do I need to buy another switch? If I need another switch, what is it and in what sequence is it hooked up.

Any help would be appreciated, thanks

[dosborne]

Adding a 5th receiver has been discussed many times such as in these threads.
cascading SW44 switch for 5+ tuners

need help /multiswitch with 5th receiver

[Q]

Harryhoo,

I have never read or heard about anyone using 2 outputs from one multi-switch to feed another multi-switch (one lnb only) which would give a total of 6 outputs if it works. I have my doubts.

[Harryhoo]

With a little trial and error I was able to set up the 4700 receiver by using the multi switch for the 91 satelite only. I am feeding to the 4700 from the multi-switch and then into the sw44 switch so I can get both 91 & 82 on the 5200 and 9200.

[dosborne]

Originally Posted by Q

I have never read or heard about anyone using 2 outputs from one multi-switch to feed another multi-switch (one lnb only) which would give a total of 6 outputs if it works. I have my doubts.

Easily doable. I run 91 into a 3x8 multiswitch which in turn feeds into various SD receivers and a SW44. The SW44 along with 2 lines from 82 then feed my HD receiver.