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Thorn · 02-09-2006

Those type of posts tend to be old, because the RF physics never changes. Unlike computer software or hardware, it isn't outdated in 3 months.

A Primestar dish, a DirecTV dish, and a Dish Network dish will all work about the same. While satellite TV dishes are designed for 10-12GHz, they all will work for 2.4Hz. Generally, you will obtain a gain of 25-30dBi and a 20-30º beamwidth. The variations I've seen are more dependant on materials and construction techniques than the actual dishes used.

As to "distance": You could get 20 miles or you could get 2 feet. By itself, distance and range are a null questions. You have to know the gain of the antenna. This will depend on the actual unit, and your skills. Once you know the gain, you can apply that to the standard equations involving PtP calculations. Those results will in turn be influenced by the terrain, height above ground, gain at the receiver, receiver senstivity, etc.

In other words, you have to do the math.

02-09-2006	#4 (permalink)
Thorn Did you do the math? Join Date: Apr 2002 Location: Villa Straylight Posts: 10,082	Those type of posts tend to be old, because the RF physics never changes. Unlike computer software or hardware, it isn't outdated in 3 months. A Primestar dish, a DirecTV dish, and a Dish Network dish will all work about the same. While satellite TV dishes are designed for 10-12GHz, they all will work for 2.4Hz. Generally, you will obtain a gain of 25-30dBi and a 20-30º beamwidth. The variations I've seen are more dependant on materials and construction techniques than the actual dishes used. As to "distance": You could get 20 miles or you could get 2 feet. By itself, distance and range are a null questions. You have to know the gain of the antenna. This will depend on the actual unit, and your skills. Once you know the gain, you can apply that to the standard equations involving PtP calculations. Those results will in turn be influenced by the terrain, height above ground, gain at the receiver, receiver senstivity, etc. In other words, you have to do the math. __________________ Thorn "I'm The Doctor. I'm a Time Lord. I am from the planet Gallifrey in the constellation Kasterborous. I'm 903 years old and I am the man who is going to save your lives and all 6 billion people on the planet below... You got a problem with that?"