DG 120+ and Declination Angle

G0JCN

G0JCN

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My Satellite Setup
Home brew PC, Fortec Star FSCI-5100 plus + ultra sat RX. triax 110 motorised dish
My Location
Forest of Dean, Gloucestershire
#1
Hi all,

So how do I set up this motor, I have just unpacked it and I am reading Declination Angle. What is that?? If I set my latitude and then look at the table it gives 7.3 Declination, the instructions say set to 40 minus declination angle, ie 40-7.3=32.7 ok that was easy, but if i would point a static dish at Intelsat ( 1W for set up) I would need an elevation of 30.6 is this 30.6 the same, or near enough the same as the 32.7?

Sorry if I sound stupid but I want to get it right.

Thanks

Martin
 
rolfw

rolfw

Believe it when I see it Admin.
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My Satellite Setup
Technomate 5402 HD M2 Ci, DM7000s, Transparent 80cm Dish, Moteck SG2100 DiseqC motor, lots of legacy gear. Meters: Satlook Digital NIT, Promax HD Ranger+ spectrum analyser.
My Location
Berkshire
#2
Loads of posts on this Martin, but bear in mind that your motor arm is probably tilting downward slightly, so the declination angle will take account of this. :)
 
G0JCN

G0JCN

Member
Messages
35
Likes
0
My Satellite Setup
Home brew PC, Fortec Star FSCI-5100 plus + ultra sat RX. triax 110 motorised dish
My Location
Forest of Dean, Gloucestershire
#3
Yeh I've been reading some of them and it looks as if everyone is as confused as I am because I have seen no clear explanation yet.

My guess is that the 40 degrees on the sheet is just an example and that in reality the set up should be <my static dish angle (30.64) minus the declination angle (7.47) > giving an antenna elevation setting of 30.64 minus 7.47, 23.17 on the dish scale.

That makes sense I think, anyone want to help with a different interpritation, please......

Martin

3 HOURS LATER.......

OK That was wrong ............... the 40 minus declination angle DID ACTUALY WORK. I cant belive how easy it was to set up, but it IS set up and working. :-))
GREAT
 
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