OTHER AVL Dish Skew question.

[Codematic]

Greetings,

I posted here a year ago about my AVL dish. I have the electronics replaced and can move it remotely with a joystick.

I am trying to understand the skew, I know there is horizontal and vertical polarities. And a skew off of that. The dish has a mechanical skew capability of +-95 deg.

So the picture below I think is a horizontal polarity, with +25~ skew ? Since 0 is the LNB straight up.

But what does a vertical skew look like ? I can move the skew all the way to one side, or the other then when there, tilt it +- back to skew ?

Thanks,

 

[Codematic]

Thinking about this more, it seems that skew on my dish is done like this ?

Thoughts ?

Thanks !

 

[arlo]

Greetings,

I posted here a year ago about my AVL dish. I have the electronics replaced and can move it remotely with a joystick.

I am trying to understand the skew, I know there is horizontal and vertical polarities. And a skew off of that. The dish has a mechanical skew capability of +-95 deg.

So the picture below I think is a horizontal polarity, with +25~ skew ? Since 0 is the LNB straight up.

But what does a vertical skew look like ? I can move the skew all the way to one side, or the other then when there, tilt it +- back to skew ?

Thanks,

Add + or - 90 degrees to the current ~ +25 degree skew. And yes with the wider opening of the waveguide being horizontal at 0 degrees. It is set to receive horizontal polarization.
In "my" world with voltage switched lnbf. The 0 reference could either be facing straight up or straight down. So if receiving a strong horizontally polarized transponder. Turning the lnbf 180 degrees would receive the same.

 

[Codematic]

Add + or - 90 degrees to the current ~ +25 degree skew. And yes with the wider opening of the waveguide being horizontal at 0 degrees. It is set to receive horizontal polarization.
In "my" world with voltage switched lnbf. The 0 reference could either be facing straight up or straight down. So if receiving a strong horizontally polarized transponder. Turning the lnbf 180 degrees would receive the same.

Ok great, thats what i was hoping for.

Thanks for the response.
-Lenny

Sorry for the delay, had to put the project on hold for a bit.

 

[Titanium]

Do you store the Horizontal and Vertical Skew servo defaults with each satellite position? If not, save your X and Y axis joystick setting along with the skew Horizontal and Vertical offsets to be called out by Arduino or ???