- Joined
- Jan 1, 2000
- Messages
- 35,533
- Reaction score
- 8,554
- Points
- 113
- Age
- 59
- Website
- www.sat-elite.uk
- My Satellite Setup
- A little less analogue, and a lot more crap.
- My Location
- UK
More absinth.....
More absinth.....
The original source of the information is:
www.chishma.ru/antenna/modifis-polyrnaya-anten-podveska.html
Note: It is a Russian website, but the authors acknowledge that the original solution was proposed by an English guy back in the 1970’s.
The first graph is for standard (non modified) usals angles. It shows tracking errors of about 0.3 degrees
at the extremes (I am at 4.1East)
I too have the "badr @26E"wedge,quite different from the "16E" wedge,much thinnerA man after my own heart!
Suitably equipped with a Manchester Screwdriver, the world is your lobster
I micro-align the Azimuth of my Patio Mounted 1.1m by means of a judicious kick with the heel of my boot in the appropriate corner of the paving slab. Saves all that tricky spanner stuff. Elevation micro-alignment is by means of plywood wedges inserted under the relevant corners of the slab!
It's only a hobby, after all - and the results are excellent
That is a good question. I had to look up the code to find the answer. My code was written to simulate a badly aligned dish.What do you mean by azimuth error?
As the motor elevation angle and dish declination offset angle basically concern the inclination/declination of the dish aiming, I don't understand how you bring the azimuth in...
Greetz,
A33
My last micro-alignment involved a crowbar and a shovel to throw some dirt underneath the ground stand. It got meI too have the "badr @26E"wedge,quite different from the "16E" wedge,much thinner
I even had a Hellas sat one,not in use anymore given the scarcity of its FTA offer
They all work fine.
Wedgeless is for 13&19E (monoblock) of course,and 7w works too,and so do the 1W and 4E for Ukraine
That is a good question. I had to look up the code to find the answer. My code was written to simulate a badly aligned dish.
This enabled me to understand what is wrong with the setup.
So when your dish is badly aligned then you will find that sometimes you get a stronger signal by driving the dish
to a slightly wrong position.
The elevation error measures the vertical angle between the clark belt and the arc tracked by the dish.
The angle error then measures the angle between the dish axis and the line to the the sattelite, With a poorly aligned
dish, and after optimising usals position to get maximal signal, the satellite is not exactly above or below the position that that the dish points to, so this "angle error" is not measured in a vertical plane. The name on the legend is misleading. It should say "angle error" and not "azimuth error"
My spreadsheet looks like this:
OOPS! - My badBy the way (I just noticed):
"Declination (corrected) 7.99 degree" in the spreadsheet should of course be 6.63 degree.
Less motor axis inclination (= more motor axis declination) should be compensated with less dish offset declination.
Greetz,
A33