Help for gilbertini 1.5

[rayo77]

I have a dish gilbertini 1.5. I do not have its original shield. I want someone to help me and give me the measurement of the shield’s distance and the LNB distance to the focus of the dish. Thank u

 

[Channel Hopper]

Shield ?

The feedarm is not a straight item btw.

Technical Info
Size: 155.0 x 166.0 cm
Offset angle: 21.3°
Pole mount: 55 - 100 mm
Elevation range: 21.3°
Noise figure at 30° elevation: 33 k
Frequency range: 10.00 - 13.00 GHz
Antenna gain at 10.95 GHz: 43.3 dB
Cross polarization decoupling: > 30dB
Wind pressure at 120 km/h: 235 kg

 

[rayo77]

Shield ?

The feedarm is not a straight item btw.

Technical Info
Size: 155.0 x 166.0 cm
Offset angle: 21.3°
Pole mount: 55 - 100 mm
Elevation range: 21.3°
Noise figure at 30° elevation: 33 k
Frequency range: 10.00 - 13.00 GHz
Antenna gain at 10.95 GHz: 43.3 dB
Cross polarization decoupling: > 30dB
Wind pressure at 120 km/h: 235 kg

Thank u for respond

I want to know the distance Rod?

Arrow pic
What is the distance in metres?

 

[Channel Hopper]

Thank u for respond

I want to know the distance Rod?

Arrow pic
What is the distance in metres?

The one on the imagery looks to be correct, though you have only taken pictures from underneath, a side view would be useful..

So are you going to be constructing something similar, along with the correct feed arm support points since they also look genuine ?

 

[EnoSat]

I think he will be able to construct only when you provide him with distance and not technical parameters

 

[rayo77]

The one on the imagery looks to be correct, though you have only taken pictures from underneath, a side view would be useful..

So are you going to be constructing something similar, along with the correct feed arm support points since they also look genuine ?

The feed arm support points are not original. I am missing a signal, so I want to know the correct distance

 

[Channel Hopper]

I think he will be able to construct only when you provide him with distance and not technical parameters

It is not a single parameter, so whatever has to be provided will be more than the o/ps single dimension request.

I would suggest they return to site and take measurements of the connecting arms to whatever survives since it now an archaeological quest.

Contacting Gibertini Italy directly should provide solutions, a product part /cost/delivery etc. ( and may be better than blind questions on a forum)

 

[EnoSat]

The feed arm support points are not original. I am missing a signal, so I want to know the correct distance

Try contacting here, they may still have this dish and provide you with the dimensions.
Or write to satesco, who also uses the 1.5 dish (I think Gibertini too)

 

[pipino]

really a shame i used to own this dish and did many experiments with it , find this datasheet maybe will help you find what you are looking for

 

[rayo77]

Try contacting here, they may still have this dish and provide you with the dimensions.
Or write to satesco, who also uses the 1.5 dish (I think Gibertini too)

Thank u for info

 

[a33]

From the specs of the Gibertini pdf that @pipino posted ( flatfaced 150.0x161.0=21.3* offset, 70.0* illumination ), the focal point would be 163.23 cm from the top of the dish, and 104.74 cm from the bottom of the dish.
So you could find your arm position, and side-arm position + length, from that.

However, I would always take measurements from the dish itself, to do the parabolic calculations on. Specs "on paper" should not be trusted, without some checking...


Greetz,
A33

 

[a33]

However, I would always take measurements from the dish itself, to do the parabolic calculations on. Specs "on paper" should not be trusted, without some checking...

@rayo77 :
So, did you receive side arm length specifications from somebody?
Or are you ready or willing to do measurements on the dish, to really check?

For precise calculations, I would recommend to calculate on height, width, and depth at the center (of parabolic surface, excluding the rim).

A more rough assessment could be done by measuring from the bottom of the dish to about 3 cm in front of the center of the LNB holder. If that distance would be about 104-105.5 cm, chances are that the above specs calculation is not very bad...

greetz,
A33