How to measure a dish | |
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29-01-2007
| #1 | ||
| ASBO Club Member - Persona non grata  Join Date: 14-11-2006 Location: Athens-Greece
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My System: CM 3.0m @ 28.2 w PACE |
Hello all, silly question probably but "how should you measure a dish" ? i.o.w what does for example 1.5m stand for ? Is it the horizontal diameter, the vertical, is it perhaps always the greater of the two or perhaps is it the circumference (measuring the curve of the dish) ?? Shouldn't dishes be measured in area i.e 1.5x1.3=1.95m2 ?? | ||
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29-01-2007
| #2 | ||
| Nasty Dish Obsession  Join Date: 01-06-2004 Location: Oxfordshire
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My System: SS1. 3.4Ghz Dual Core P4. 125cm Gibbi with Channelmaster feedhorn and Inverto C120 twin. 36v H to H  ...And thou were the truest friend to thy lover that ever bestrad horse..." | Convention says it will be horizontally across the face of the dish at the widest point, but not including the lip (if any). Some of the more unscrupulous traders make much of the fact that people are generally unaware of this convention. Rgds L. 
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29-01-2007
| #3 | |||
| Oldgeezer  Join Date: 04-09-2004 Location: West Mids, UK
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My System: Topfield 5800 Echostar3000,DB7000, Relook 400S, Humax HDC2000, 55cm Fibo Gregorian dish with waveguide and Motek 2100 mod, 90cm Fibo Gregorian dish, 120cm Fibo Gregorian dish on a 1224 motor with waveguide |
Whilst this not the area of a circular or 'elliptical' dish, it might be a way of comparing dishes 'one to another'. of like shape. Dishes are usually selected for their gathering power, which generally equates to illuminated diameter, ie: a function of the horizontal measurement, advertising people may well take liberties to exagerate the size of their wares.  Actual area for a PF dish easy enough, but an offset dish more awkward being a bit egg shaped, and trapezoidal offset dishes  PS. must learn to type faster
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