Thread: Flipped polarity satellites

I am using a DSR922 and SV360 Elite. I need to find out why the 922 has to be turned "on" to view vertical channels on my SV360.

These vertical channels are almost always on the flipped polarity satellites (vertical channels are even numbers); the 922 does not have to be "on" for the horizontal channels.

But, on W1 103W, the 922 has to be off for the channels to come in on the SV360.

I don't want to leave my 922 on all the time cause I can see faint horizontal lines across the television screen. I do not want to see those faint lines.

I am using only C-Band. The line comes into the house and is screwed into a High Frequency splitter with the power pass port going to the 922 and the other port to the SV360.

Any ideas why the 922 has to be on? Any ideas on what to change to be able to have the 922 in the off position?

Why not run the coax to the SV360, and than using the out or loop on the SV360 to the 922. Leaving out the High Frequency splitter?

Like what Long Hair said. The reason is that the way you have it hooked up only one of the receivers can control polarity.
Are you using a LNBF (voltage controlled polarity) or a LNB and feedhorn with a servo?

Originally Posted by Desertnight

I am using a DSR922 and SV360 Elite. I need to find out why the 922 has to be turned "on" to view vertical channels on my SV360.

These vertical channels are almost always on the flipped polarity satellites (vertical channels are even numbers); the 922 does not have to be "on" for the horizontal channels.

But, on W1 103W, the 922 has to be off for the channels to come in on the SV360.

I don't want to leave my 922 on all the time cause I can see faint horizontal lines across the television screen. I do not want to see those faint lines.

I am using only C-Band. The line comes into the house and is screwed into a High Frequency splitter with the power pass port going to the 922 and the other port to the SV360.

Any ideas why the 922 has to be on? Any ideas on what to change to be able to have the 922 in the off position?

I don't have a 922 so what I say is based on other receivers, but I'm curious whether you have a VCII module installed? On most C-band IRDs, if they have a VCII installed, when you turn it "OFF", it's not really off, just that the TV display is disabled, and while off, the receivers will often try to locate an active VCII channel (not many of those around anymore). I know my receivers would pause for a minute or so after being turned off, then would start cycling through the channels over and over looking. Not sure if it would ever stop or not.
With a 922, I don't know if they try to do something like that looking for DCII channels or what? But when you turn off a receiver like the 922, the LNB is still powered up, and unless it's doing some kind of searching like I describe, and actually changes polarity on it's own, most receivers will retain whatever polarity you've left it on, because the newer receivers generally send out polarity signals to the polarotor only for a few seconds, then stop, and the polarotor will usually retain that setting (assuming that you're using a polarotor rather than an lnbf).
But anyway, if you do have a VCII module installed, you might try pulling that out, since it obviously isn't of any use anymore anyway. It may stop trying to switch channels on you if you do that.

You hit hit the nail on the head! Just like with the VCII signal the 920/922 receivers when "powered off" will look for a DCII signal. If you "power off" on a non DCII channel and watch the front panel within a few minutes you will see the receiver indicate it has found a DCII signal when the DCII light comes on.