rogermash Posted June 21, 2015 Share Posted June 21, 2015 Am just back from a few days away in windy Wales! After watching the dish rocking in the wind, I was wondering why portable dishes are solid. The one on our house is perforated, and never moves. Why cant we have them on our vans? (?) Link to comment Share on other sites More sharing options...
Cliffy Posted June 21, 2015 Share Posted June 21, 2015 Good question I wait with bated breath. Link to comment Share on other sites More sharing options...
lennyhb Posted June 21, 2015 Share Posted June 21, 2015 The Snipe we have on current van is fine in high winds, the Oyster on the last van you had to put down in moderator high winds. Link to comment Share on other sites More sharing options...
colin Posted June 21, 2015 Share Posted June 21, 2015 Whilst I think the idea of perforated dishes for mobile use make sense, I would dispute that is why they rock, obviously less load on a perforated dish but I have both types at home one being over a metre in dia but it doesn't move as it's solidly fixed down, the little i-sat dish on my van moves, mainly it seems due to play in the mechanism. Link to comment Share on other sites More sharing options...
Frankkia Posted June 22, 2015 Share Posted June 22, 2015 As Colin said - The rocking of the dish is due to the mechanics of the dish moving equipment or method of holding it in place. A perforated dish may allow some slight breeze to pass through but in high winds will make no appreciable difference between a perforated and a solid dish. Likewise reception between a solid and a perforated dish of the same size and quality is basically the same. Larger perforated dishes can become distorted by constant wind loading and not perform well. This is due to the fact that the perforated edge of the dish is too easily bent whereas the solid ones are better at retaining rigidity. Those perforated dishes in the 60 to 80cm range should be ok but always be careful when storing them (if they are not left on the roof) as they are easily distorted and then will not reflect the signals accurately leading to a loss of signal at the edges of the footprint. In some locations subject to high winds or heat distortion "Mesh" dishes are used - these are open weave a bit like chicken wire fencing - however these cannot be used for the, high, Ku band signals we use from the Astra satellites. Link to comment Share on other sites More sharing options...
Guest adhple Posted July 1, 2015 Share Posted July 1, 2015 Get a Snipe from Germany, 1/. Because its cheaper and 2/. Comes with mounting plate, 3/. and fit it your self Link to comment Share on other sites More sharing options...
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