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Old 05-16-2004   #16 (permalink)
Thorn
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Quote:
Originally Posted by listenphish
15'-20'? Thats a big mast. Tall. Ugly. Is it possible to have it lets say 10' off the ground with maybe a higher gain antenna? ...
Put a tripod with a 5' mast it on the peak of a roof. That will be 15' up without any problem. What it comes down to, is do you want something that works, or something that's pretty? Don't like masts? Do without WiFi covering the island.

4.5dBi will give you a nice spherical pattern. A higher gain will just make the pattern flatter. Depending on the gain, you're running the risk of being outside the pattern.

Quote:
Originally Posted by listenphish
...
Also, what is the longest antenna cable you can have without losing significant signal? ...
That depends on the type of transmission line. With some types it is 1 foot. Other types, and it's 100 feet. Look at the Times Microwave site. They list the loss per foot of all the types of cable they sell.

Quote:
Originally Posted by listenphish
...
Also....what are rubber duck antennas? I've never heard that term...
"Rubber duck" antennae are those models which are covered in rubber. Typically they are seen on APs in WiFi equipment.
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Old 05-16-2004   #17 (permalink)
listenphish
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Thanks alot...you've been very helpful.
I think i understand the more gain=flatter theory now too..

-ALex

Quote:
Originally Posted by Thorn
Put a tripod with a 5' mast it on the peak of a roof. That will be 15' up without any problem. What it comes down to, is do you want something that works, or something that's pretty? Don't like masts? Do without WiFi covering the island.

4.5dBi will give you a nice spherical pattern. A higher gain will just make the pattern flatter. Depending on the gain, you're running the risk of being outside the pattern.



That depends on the type of transmission line. With some types it is 1 foot. Other types, and it's 100 feet. Look at the Times Microwave site. They list the loss per foot of all the types of cable they sell.


"Rubber duck" antennae are those models which are covered in rubber. Typically they are seen on APs in WiFi equipment.
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Old 05-16-2004   #18 (permalink)
Thorn
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Quote:
Originally Posted by listenphish
Thanks alot...you've been very helpful.
I think i understand the more gain=flatter theory now too..

-ALex
You're welcome. Good luck with it.

As far as the pattern flattening as the gain increases, look in the Antenna FAQs, there are some explainations.
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Old 05-16-2004   #19 (permalink)
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It's been beat to death like a cake donut with a sledge hammer.
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