Quote:
Originally Posted by Debbi
I started with a motorized Ku-band setup. I have a dual lnf with one coax run directly into the bedroom receiver, the other coax runs to the motor and then into the living room so the dish can only be turned from one room. Everything was working great - then my neighbor gave my husband a large C-band dish.
I ran the large all-in-one cable from the big dish in to the analog receiver the dish came with, but I connected the coax portion of the cable to a DiSEqC, I also connected the bedroom Ku coax to the DiSEqC and ran a jumper coax to the bedroom receiver. Life was good - I had Ku and C on the bedroom receiver.
Now my husband wants me to add the C-band to the living room receiver. I considered buying a dual tuner receiver, but I thought possibly I could use the same setup I had in the bedroom - just use a DiSEqC. I'm just not sure if I can move the motorized dish through the DiSEqC. I hope that makes it more clear. |
I think I understand, although I'm not quite sure whether the C-band receiver is actually doing anything. There are still some analog channels you might be able to see with it. You also said the C band was fixed, so I guess you didn't hook up the motor wires. Perhaps you're just using the C band receiver to change polarity.
But anyway, since you have a dual output lnbf, I guess what you describe can work. The only issue is power for the C-band lnb. Ie the way you have it, I think your bedroom DVB receiver is powering the lnb, only when that receiver is viewing C band. I assume that you're thinking of using a "T" to divide the C band coax, running one line to each
DiseqC switch? If both bedroom and livingroom receivers are set to C-band, both receivers would be sending power to the C band, and there is a possibility of interaction, and particularly if you accidently have one supplying 13 and the other 18V, that interaction could potentially cause problems. Most people usually insert DC blocks or use a one leg power pass "T", having one receiver being the one that provides power to the lnb, however if you're going through the diseqC switch, if that receiver is switched to ku, the lnb wouldn't be getting power so the other receiver couldn't use it.
You could have the analog receiver power the lnb, "T"ing off that to the "T" between your two diseqC switches, but that would significantly reduce the signal to your two DVB receivers. I have a couple gadgets that I used for a while, that would solve this, but I don't know where you can buy them. What I had, was a "T" that passed about 85% of the signal out the line that is DC-blocked. I used to have the power pass 15% leg going to my analog receiver, which still gave me enough signal to see the occasional C band signal I'd watch, but would provide a lot of signal to my digital receivers, which had DC blocks to isolate the power.
The power interaction may not be an issue, as some people just ignore this situation, but I wouldn't do it without DC blocks myself.
One other way out, is to find a power inserter of some kind, again, I'm not sure where you could buy one, but a module that will provide 18V to the lnb, without affecting the signal. This way, you could have DC blocked to both diseqC switches, and you'd get good signal to both receivers. I know these power inserters are out there.... I just don't know of a source, as I've never used one myself.