JasonWISP
join:2004-06-29 | reply to Anav
Re: Antennas and dBi
Yes, I understand. This wouldn't be for a WISP. But, just in general.
If it's off topic, please direct me to the right place. I'm sorry. 
Best Regards,
Jason |
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John Galt
Forward, March
Premium
join:2004-09-30
Happy Camp
 ·CenturyLink
| said by JasonWISP  :Yes, I understand. This wouldn't be for a WISP. But, just in general. Manufacturer's typically use "antenna ranges" which are facilities set up for testing antennas of a variety of types.
For example:
»www.edorss.com/pdf/Antenna_Test_···ties.pdf
Simply put, the antenna under test is measured against a reference antenna, and that antenna parameters are determined from that.
Using your Cantenna for an example, they put that on a rotating platform at a distance and apply a constant signal to the reference antenna. Then they rotate the platform slowly and record what the received signal levels are at your Cantenna. This yields the antenna plots that are usually available for every manufacturer's antennas. See some here (at the bottom of the page):
»www.hyperlinktech.com/web/hg2414hsp-090.php
That is basically how it is done...
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A is A |
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JasonWISP
join:2004-06-29 | Thanks John! That helps a lot.
I thought that might be it, but it wasn't clear when searching for it.
Best Regards,
Jason |
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