rocketdish rod degree

[siddolo]

Setting up elevation to 0° (on mount bracket rod), the dish have some up-tilt.
Setting up elevetion dish to 0° working with spirit level, the elevation rod indicate 10°.
Elevation rod is free to move up and down (1cm) into main mounting bracket, moving this the degree on indicator change..
What is the correct position?
i've some doubt about mounting this bracket.
i can not put it perpendicular to ground reading 0° to elevation rod :\
the pole is already set perpendicular by spirit level

what's the problem?

thanks

[Dave-D]

The correct adjustment is the one
that gives you maximum signal. If
the mounting pole is plumb, you're
ready to align the antenna.

If you're saying the elevation rod
is sloppy and allows the dish to
flop around, that isn't good. Dave

[siddolo]

this is the first point of the bridge.. the AP..
we're not able to receive other radio for align adjustment.
the link is 17km, 10.5miles.
this first link is locatet on the mountain, and we need to align to 109° Azimuth and -3° elevation.
after this, we can mount the second point and align this with signal strenght and snr

but i've problem with dish mount bracket..
after i put elevation rod on the main bracket until reach the 0° , the antenna is visually tilted up :\

the trees after 5m from pole can be a problem? after this completely free LOS for 17km

[UBNT-Mike.Ford]

Hello,

Please post a pic of the antenn and moutning rod.

Thanks,

Mike

[siddolo]

tomorrow i take the pics, thanks

i think that i have elevation screw bad assembled :\

[siddolo]

this is the pics...
elevation rod is set to 0° (at the top of the screw).
pole is plumb, and the antenna is tilted up...

[siddolo]

this is the assembly...
is this correc?

[UBNT-Mike.Ford]

Hello,

I am having my hardware team look into this.

Thanks,

Mike

[siddolo]

hi mike,
do you have news about this topic?
thanks

[Dave-D]

Siddolo, ignore that graticle thing with the
degree markings; it's not an absolute setting.

Your first set of photos shows the elevation
rod incorrect--it's at the limit of its up-tilt.
Your second set of photos appears near correct.

Simply mount the dish on the pole as you have
it, then place a level vertically across the face
and adjust the elevation screw until it's plumb.
The screw will be about mid-range.

You could also place a level across the face of
the feed, but it's a smaller surface to level.

Once you have the dish plumb, you can use
the built-in graticle as a relative indicator for
tilt, as you adjust it downward toward
Pacevecchia. You might want to rub some black
marker into the notch to see it better.

Or--if you have a calibrated level device--you can
set down-tilt more accurately by using it instead.

Note the built-in spirit level on the feedhorn shows
only rotation; it indicates that the polarization of
the horn is correct. There's no adjustment for this--
simply a permanent locating pin. It would also show
if your mounting pole is off plumb in that axis.

BTW: you will definitely want a radome in the
mountainous conditions at the summit. Dave

[DrNutbush]

Hi Siddolo,

I just put together my first Rocket Dishes, and did so with care. I also noticed this degree indicator, and how far off it is from a true setting with a spirit level. If I were you, I would find a zero point on the antenna and mark the bracket itself, instead of using the notch in the metal.

[siddolo]

Hi Siddolo,

I just put together my first Rocket Dishes, and did so with care. I also noticed this degree indicator, and how far off it is from a true setting with a spirit level. If I were you, I would find a zero point on the antenna and mark the bracket itself, instead of using the notch in the metal.

thanks, i will use it as relative index...
I thought it was wrong assembly

bye

[kijoma]

hi,

for the distance you are shooting, stick a nano m5 at the other end and point it approx the right way, then line the dish up onto this..

then you aren't trying to aim two dishes over a shortish distance with narrow beamwidths.! else you might as well put on a blindfold :icon_wink:

cheers