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Old March 9th, 2008   #5 (permalink)
arboristman
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Re: Evaluation of the Toroidal T-90 dish : or how to get 13 lnbs on 1 dish-Labgate

c/p
Toroidal Dishes from Wave Frontier

Why Toroidal?

There are many other antennas available on the market that offer multi satellite capabilities for a limited arc range, designed based on a parabolic formula.

The limitation of these multi-beam parabolic antennas comes from its original formula. Only one LNBF, which is installed at the center, is at its optimal position.

In other words, the other LNBFs are not at their optimal position. Therefore, a customer may experience rain fade and weak signal strength on the channels coming off from these not-optimally located LNBFs.

On the other hand, Toroidal formula makes it possible to locate all LNBFs at their optimal position due to its dual reflector design of Toroidal antenna. Therefore, Toroidal antenna provides the same signal strength and stable signal for all LNBFs under various environments.

Toroidal 55? or Toroidal 90?

Wavefrontier currently offers two different models, T55 and T90.

Toroidal 55

1. T55 has the same effectiveness of 55 cm (20 inches) dish for each LNBF installed.
2. T55 can accommodate up to 8 LNBFs.
3. T55 can cover up to 40 degrees in arc (60 degrees in azimuth)

Toroidal 90

1. T90 has the same effectiveness of 90 cm (38 inches) dish for each LNBF installed.
2. T90 can accommodate up to 16 LNBFs.
3. T90 can cover up to 40 degrees in arc (60 degrees in azimuth)
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