What are LNB Type and Motor Settings for Corotor II +?

[jsattv]

I am trying to install a Corotor II + FeedHorn and Norsat KU and C LNB's on a 12 Foot Mesh Dish in my back yard. My Receiver is a ViewSat Extreme 2000. I have a V-Box III coming today. I previously installed an Invacom QPH-031 on my Fortec Dish and Stab HH 120 Motor on the roof. For the Corotor II LNB's is the LNB Type in Antenna my Setup for C and KU to be set for Standard (10750)? Would LNB High and LNB Low be set to 5150? And for the Motor settings I used USALS on the Fortec Dish to program and scan in various Satellites and it worked well. Would it be the same for the 12 Footer Actuator/Motor or do I need to look at the other 2 Motor choices of USER & INSTALLER on my Receiver for the Bud Dish?

[wejones]

Originally Posted by jsattv

I am trying to install a Corotor II + FeedHorn and Norsat KU and C LNB's on a 12 Foot Mesh Dish in my back yard. My Receiver is a ViewSat Extreme 2000. I have a V-Box III coming today. I previously installed an Invacom QPH-031 on my Fortec Dish and Stab HH 120 Motor on the roof. For the Corotor II LNB's is the LNB Type in Antenna my Setup for C and KU to be set for Standard (10750)? Would LNB High and LNB Low be set to 5150? And for the Motor settings I used USALS on the Fortec Dish to program and scan in various Satellites and it worked well. Would it be the same for the 12 Footer Actuator/Motor or do I need to look at the other 2 Motor choices of USER & INSTALLER on my Receiver for the Bud Dish?

The V-box controllers will move your dish OK, but they really aren't suited to control polarity on a Corotor feedhorn. You are better off having an analog receiver control the dish. I don't know if the Viewsat receiver can be set up to switch between Ku and C-band LO freqs, many or most receivers cannot. You are better off defining separate satellites for C and Ku reception even though it is the same sat. For example I have sats like G10r-C and G10r-K stored, one with 5150 and the other with 10750.
Also, I doubt that the V-box III will do USALS, the other versions didn't. You'll probably have to save sats via DiseqC-1.2 .

[jsattv]

Originally Posted by wejones

The V-box controllers will move your dish OK, but they really aren't suited to control polarity on a Corotor feedhorn. You are better off having an analog receiver control the dish. I don't know if the Viewsat receiver can be set up to switch between Ku and C-band LO freqs, many or most receivers cannot. You are better off defining separate satellites for C and Ku reception even though it is the same sat. For example I have sats like G10r-C and G10r-K stored, one with 5150 and the other with 10750.
Also, I doubt that the V-box III will do USALS, the other versions didn't. You'll probably have to save sats via DiseqC-1.2 .

Thanks wejones I have an old Uniden 9900 Receiver and 9900P Power Supply. The 9900 Receiver is working but the 9900P is NOT putting out the 36 VDC which is why I ordered the V-Box. Tried resetting fuse on back of 9900 P re the Uniden Instruction Manual - its a green kind of a plastic lite, but nothing doing and there is a cord connecting the Uniden 9900 Receiver to the 9900P Power Supply. Measured 0 Volts DC coming out of 9900P 36 VDC Terminals. Guess I could somehow try using Both Boxes since I need Polorotor Control. Sorry for not knowing, but what do you mean by save sats via DiseqC?

[wejones]

Originally Posted by jsattv

.... Sorry for not knowing, but what do you mean by save sats via DiseqC?

Well the VBOX thing is a DiseqC-1.2 controller which simulates a DiseqC-1.2 motor. To set up the VBOX, you have to move to each sat, and use your DVB receiver to send a DiseqC-1.2 command to save each sat. DiseqC-1.2 motors store the sat positions in the motor, but with a VBOX, the positions will be stored in the VBOX.

Motors that are USALS compatable can move to a satellite just be sending the USALS go to X command, but this can't work with an actuator type mover. The VBOX has no way of knowing where each sat is located, so you have to manually find the sat and save it's position.

[jsattv]

Thanks a lot for the info wejones, looks like I may need a new Satellite Receiver for my Mesh Dish. Ive been told that there are 2 Pansat Models - 2700 and 3500 that even have a a built in Polorotor Control. Has anyone tried these units??

[wejones]

Originally Posted by jsattv

Thanks a lot for the info wejones, looks like I may need a new Satellite Receiver for my Mesh Dish. Ive been told that there are 2 Pansat Models - 2700 and 3500 that even have a a built in Polorotor Control. Has anyone tried these units??

I've heard that there were Pansat models that control polarotors, but I didn't realize they were still available. That might be a good option. Or, switching to a C/Ku lnbf. Or, you can probably find a used analog receiver for not much more than the shipping.

[1captain]

Originally Posted by jsattv

Thanks a lot for the info wejones, looks like I may need a new Satellite Receiver for my Mesh Dish. Ive been told that there are 2 Pansat Models - 2700 and 3500 that even have a a built in Polorotor Control. Has anyone tried these units??

I have used a pansat 2500 an 2700 to work a sevo motor and they work good with no problem, dont know about 3500, but if it has the terminals for a servo dont see why it wouldnt work it. 1 peice of advise will give you is 1st set youre skew settings for both vert & horz before doing any scanning. i use in my house a 2500 slaved off a DSR922 and have found that it works better (than any other receiver that i tryed) for finding wild feeds that other fta receivers miss. hope all helps. Captain

[ayelvington]

There was an earlier post on the forums about this sort of thing. Corotor control is not a solution with newer receivers, but you do have a choice. If you can find a feedhorn that supports independant Horizontal and Vertical LNBs for C and Ku band, then you can install a switch at the LNBF assembly to select which LNB to be using. You would still be able to use the new dish controller and an MPEG receiver.

The hard part is finding an affordable feedhorn that meets those expectations. We gave up at work and just converted to a BSC621 and called it done. I do have a feedhorn with independant H/V LNBs for C-band, but a single Ku band LNB using a corotor.

Good luck!

a

[Powrline]

Originally Posted by ayelvington

The hard part is finding an affordable feedhorn that meets those expectations. We gave up at work and just converted to a BSC621 and called it done.

The BSC621 LNB, or feed horn, Will this LNB work on a 90 cm dish, and will I be able to receive digital c-band on the 90 cm (offset) Fortec Star dish?

I would like to get the circular and linear (Ku) sats on one lnb, which I believe this one will do.

I didn't know there was a digital c-band until I just read about it. What else can I learn about digital c-band?

[wejones]

Originally Posted by Powrline

The BSC621 LNB, or feed horn, Will this LNB work on a 90 cm dish, and will I be able to receive digital c-band on the 90 cm (offset) Fortec Star dish?

I would like to get the circular and linear (Ku) sats on one lnb, which I believe this one will do.

I didn't know there was a digital c-band until I just read about it. What else can I learn about digital c-band?

You will get a wide spectrum of opinions on this. There are many parameters, not the least of which is what one would consider to be acceptable reception.
The most accepted opinion is that in order to get good reception on most conventional C-band signals, you will need a minimum of a 10' dish. Many people on this and other forums get C-band with 8', 6', and even 4' dishes, but with each drop in size, you get both a reduction in sensitivity AND an increase in beamwidth, which will mean that you will be unable to pick up some C-band signals, either due to signal strength and/or interferrence from adjacent satellites. If you search this and other forums, you will find posts from people who report getting C-band reception with very small dishes, like a 90 cm dish, however most of these reports are for satellites that are either stronger than most conus sats, or are from satellites which don't suffer from interferrence from adjacent satellite signals. If you try receiving conus C-band with a 90 cm dish, you will generally be receiving at least 5 different sats at the same time, and the odds of interferrence are very high. Personally, I've never tried C-band on a small dish, the smallest I've used was a 6' dish, which is significantly lower signal quality than with the 10-11' dishes I've used.
Anyway, is it possible to receive a few signals with a 90 cm dish, probably, but I sure wouldn't expect to get more than 1% of the signals up there.

Re what is on C-band, well, there is a LOT, but it is different from what you see on Ku. On Ku, you see a lot of newsfeeds, a lot of 2nd tier network local stations, a lot of foreign language channels, and non-premium sports. On C-band, you'll find a lot of HDTV channels, some major network stuff that you don't see on Ku, a lot of pre-feeds of syndicated network programming, some premium sports feeds, and some channels with movies and such (these come and go). For me, there is a lot more on Ku, but the quality stuff is more likely to be on C-band, with the exception of PBS, as there is more PBS on Ku. However that's just personal preference, because I generally don't watch foreign stations, and don't watch 2nd tier networks.

The thing about C-band, is that it seems like since there are many more Ku dishes out there, that they are more likely to scramble something over Ku than over C-band. Over the last few years, I've seen hundreds and hundreds of recent movies on C-band, but very few on Ku. Although this has tightened up a bit of late as things scramble or move to 8psk, etc.

Anyway, I think there is more quantity on Ku, but more quality on C-band, but that's just my personal preference.