SG2100 East / West Limits

[Elite09]

Question for all you experts out there.

I will be moving my dish/motor to another location in the yard with a better LOS.

I want to be able to move the dish to 30W with the motor.

My lat is 51.56N
My long is 109.8W

If I goto my due south position. I am limited to 40W - 180W.

Is there anyway I can motor to 30W? Or is the east/west limits decided by your longitude?

Thanks.

 

[caddata]

...east/west limits decided by your longitude?....

Sadoun states your motor is plus or minus 75 degrees or 150 degrees total . If you're at 109.8, then all you'll get is 34.8 to 184.8 degrees. If that's not satisfactory you have only one option for a motorized dish.....get a motor with more travel.

Although your motor is advertised as a horizon to horizon motor, it's not. And neither are the others except for the Moteck H180, which is listed as plus or minus 90 degrees. The Moteck will get you from 19.8 to 199.8 degrees

Harold

 

[mastermesh]

use 1.2 instead of usals and you might be able to sqeeze a few more degrees in. My sg2100's usals only takes me down to 33 w. I swapped over to 1.2 from there and tuned in 30w with a few nudges... try it, it might work for you?

I'm at roughly 92 degrees west...

 

[TiminMb]

I'm at 49 North 97 West and I can't motor over to 30W with an SG2100. Its a couple degrees beyond the limits.

 

[voomvoom]

If I remember right (and I don't have an SG2100), I read where the USALS will go 60-65 degree's from center in either direction. Then you can use the 1.2 diseqc commands and travel another 5-10 degree's? Which should make the total distance of travel about 70 degree's from center?

Al

 

[TiminMb]

70 degrees from centre to centre may not be enough if you are fairly far north, or east or west of the satellite. I think I figured out that here I needed about 3.5 degrees more rotation than the motor would provide to aim at 30W.

 

[Anole]

how far can you motor ?

I think the way the motors are rated (plus or minus so many degrees of the shaft)
. . . and the way the satellites are laid out . . .
You don't get satellite locations plus or minus the ratings on the motor.
I believe the actual range of birds, is based on your location, and the diameter of the earth.
So, I did some calculations for Los Angeles, and I think should get about:

              motor:        Stab HH90                  DG-2100
    bird located at:        65º - 165º                60º - 170º

That's just 100 degrees of birds for the Stab and 110 total bird-view for the SG2100.

The same approach for 49ºn & 97ºw, gives a east-most bird of about 40º for the Stab and 33º for the DG2100.
That seems to roughly agree with what TiminMb observed, above.


1). get a printout for your location like the ones at GeoSatFinder .
2). find your true south (it'll be the one with zero skew).
3). note the magnetic azimuth (compass reading) for that satellite.
4). add the range of travel for your motor to the mag az from #3, above.
- eg: add 65 or 70 or whatever your motor rating is.
- that is where your motor can travel to.
5). use the chart to see what bird represents that magnetic location.
- write down the bird.
6). subtract the range of travel for your motor from the mag az in #3, above.
- eg: subtract 65 or 70 or whatever your motor rating is.
- that is where your motor can travel to.
7). use the chart to see what bird represents that magnetic location.
- write down the bird.
The answers you got in #5 and #7 are the satellites at the maximum swing of your motor.

edit:

I want to be able to move the dish to 30W with the motor.
My lat is 51.56N
My long is 109.8W
If I goto my due south position. I am limited to 40W - 180W.

I just calculated an estimated range of satellites you motor can currently reach, as about 32ºw to 164ºw
...and 30ºw is below the horizon for you... according to the GeoSatFinder program !
Satellite Finder ver 4.3 agrees - below your horizon.

 

[linuxman]

It is possible to adjust the physical motor limits on the SG2100.

I don't remember how to do it, but I have read on this forum that it is possible.

Do a search on limits. You might have to wade through a lot of posts, but you will find it.

It shouldn't be too hard to get another 3 degrees by making the adjustment.

Fred

 

[TiminMb]

When I tried motoring to the limits using 1.2, it screwed up my zero. Leaving that alone.

 

[Mr Tony]

can you actually see 30W from 109.8 and that far north? I'm at 45N 93.5W and 30W is at 8 degrees elevation

 

[jerryt]

When I tried motoring to the limits using 1.2, it screwed up my zero. Leaving that alone.

Offset an addition lnb on the opposite side of center from 30w. and you should be able to mount it to get 30w before the motor limits. (Provide you have LOS)

 

[SatPhreak]

Elite09, you can't get 30w. I used your lat and long and get a look angle of -2.33 degrees.

 

[SatelliteAV]

On the SG2100 and the GS120, the motor can be opened and the mechanical stops removed. This will void the warranty, but will give 10+ more degrees on either end of the arc. Be sure to set the software limits in the receiver!

 

[Tron]

Elite, if the satellite is below the horizon from your location, there is absolutely nothing you can do to receive a signal from it (other than move )