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how to open port in Mikrotik »
« [Equipment] 900MHz with Mikrotik  
AuthorAll Replies


Killer Max

@alphared.com

reply to seagreen
Re: Forum FAQ - pending feedback...

said by seagreen See Profile :

please provide with the formula to calculate the gain of the antenna in dBi ...
Not sure that is even a valid question. The gain of an antenna is a factor of it's physical construction, and not something that would be deduced by a mathematical formula. The amount of gain and the shape of the envelope are factors of reflective surface area and it's relative angles, active element characteristics, apex distances and etc. There are certainly formulas used at the manufacturing level as guides for a new design, but the actual gain of an antenna is authoratively determined by radiation pattern measurements in a laboratory environment. If the question was actually "What is the formula to determine the difference between DBi and DBd", the answer is add 2.2 to the DBi value.
to forum · permalink · 2008-03-21 16:21:11 · Reply to this


seagreen
Premium,Mod
join:2001-05-14
Salish Sea
edit:
March 21st, @04:28PM
 That wasn't my question but rather feedback left in the FAQ....

I kinda figured it wasn't going to have a simple answer and since I don't what the intent was of the person who asked I thought I'd throw it out to you guys to talk over.
to forum · permalink · · 2008-03-21 16:27:35 · Reply to this
Forums » Industry Forums » Wireless Service Providershow to open port in Mikrotik »
« [Equipment] 900MHz with Mikrotik  

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