If @blejac is thinking of buying the dish and they are happy with the price it is a very good dish and will give many years of service.
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Best satellite dish 📡
- Thread starter Theristis534
- Start date
If @blejac is thinking of buying the dish and they are happy with the price it is a very good dish and will give many years of service.
Consider that the bigger the dish is, the more precise has to be its alignment. And probably done by a professional technician
There are quite a few hobby satellite members on the forums who have the skill to align large dishes.
If a large dish is single piece there are only two angles (Az/El) to set correctly for a fixed dish and three angles (Az/El/Dec) for a motorised dish, if azimuth is considered an angle.
This is fairly easy to do with a digital inclinometer and a reasonably accurate signal measuring device.
If the dish is multi-piece, such as 6 petals or more then the petal alignment also has to be taken into account.
For a 4.5m dish or larger that is multi piece then I agree that a specialist technician with laser mapping or some similar alignment device is needed, especially once the frequencies get up into the Ka-Band range.
If someone knows i want to make my 2.40 dish motorized again. But i do not remember because i live in South East Greece west to east
which is the most safe setup for the dish? For example 30west - 52east, or 30west - 80 east? Thanks in advance.
The range of your East-West satellite arc depends on the type of motorised mount you use and the end stop limits in the motor or its controller.
A polar mount with linear actuator will generally have less arc range than an H-H mount.
My suggestion would be to look at the satellites and their frequency content that are 70 degrees to the East and 70 degrees to the West of your location and decide which "side" of the arc you prefer to be favoured. Unless you have obstuctions from trees or buildings you should be able to stretch the arc to 70 degrees either side of your location.
For example, if your location longitude is at 25 degrees East, check the satellites with orbital location between 95.0 East and 45.0 West to see which arc side you prefer.
As you get further south in latitude the range of your visible arc should increase compared to more northerly locations. You might find you can grab a few extra degrees either side on the arc from South East Greece. The numbers I used are approximate but reasonably close enough to give you an idea of the logic.
Thanks for this answer. As you describe there are some houses on the left of the dish (west side) and nothing really on the right (east side) as we
see the 2.40 from the back side. So i believe that 30w ? is the question ... i think 15 west should be ok and maybe 70east ... well the sat boy is coming
tomorrow and we will see ... as i bought new actuvator 36 it will be again motorized after 23-25 years!
see the 2.40 from the back side. So i believe that 30w ? is the question ... i think 15 west should be ok and maybe 70east ... well the sat boy is coming
tomorrow and we will see ... as i bought new actuvator 36 it will be again motorized after 23-25 years!
which is the most safe setup for the dish? For example 30west - 52east, or 30west - 80 east?
For lat=38.5, lon=24.0 (S-E Greece), 30W to 80E is about 122 rotational degrees.
When you use safety zones against 'flopping over' of about 2*25 degrees, that leaves a range of about 180 - 50 = 130 degrees.
So it should be possible, depending on the actuator triangle design that you choose.
Greetz,
A33
Edit:
140 degrees arc would even mean 153 rotational degrees.70 degrees to the East and 70 degrees to the West of your location
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well the sat boy is coming tomorrow and we will see ...
So, were you successfull?
Greetz,
A33