davemurgtroyd
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At last - it was a long slog.
At last - it was a long slog.
And definitely not a wall mountI may have missed this (long thread) - but 1.8m on the roof is surely asking for trouble, unless it's a flat reinforced concrete roof. What are the winds like in Madeira?
What are the winds like in Madeira?
FWIW, and unless this has been mentioned before, :
- the larger the dish is, the narrower is the beam width that produces decent signal levels
- thus most single focus dishes (unless very small and in strong signal areas) don't work at all well with multiple LNBs intended to receive signals from satellites spread over an arc of more than about 12 degrees of arc (and even that is "pushing your luck" in many instances).
I cannot figure out why it would work the way you say. Can you explain, please?
Without being an expert on wave-front propagation in radio frequency antenna apparatus, I would dare speculate that the answer lies in the ratio between the wave-length and dish size. The smaller the dish, the larger a dispersion (or "un-focusedness") wrsp to a specific wavelength, say, 11 GHz.So... there is no explanation?
Greetz,
A33
I would arrive at the complete opposite of your conclusion, which was:I think (and I am still speculating), that the larger the dish, the faster the signal quality (and probably also strength) drops as you move away from the centre-position.
Therefore, the conjecture would be that multi-LNB arrangements on large, say, 3m dishes does not scale up directly from multi-LNB on, say, a 60 cm dish.