Is it correct to say that a higher db omni will have a longer range than a lower db omni. However the higher the db the flater the cone will be. And thus using a lower db omni will be shorter range but have better non-line of sight chacteristics?
Not sure about the better non-line of sight characteristics but a higher db omni has a flatter rf propagation. Think of it like this. hi db=pancake, low db=doughnut. With a higher power omni, depending on the height that it is installed could potentially shoot the signal over your customers. Look at the antenna pattern data sheets of the antenna to determine your signal coverage area.
Is it correct to say that a sr5 card using 802.11a at 5.8ghz will transmit at 400mw? but if you lower the frequency to 5.1 that the power of the card is reduced?
Take a look at the
SR5 data sheet According to it, the only thing that changes the output is the data rate that it is transmitting on. I can not confirm whether or not frequency has anything to do with card output. I do know that the different frequencies in the 5Ghz band do have different EIRP limits.
If the above statement is true, then does the 65mw cards have the same chacteristics? if it's 65mw at 5.8 and you drop down to 5.1 the power is reduced? And by what amount is it reduced?
Again, take a look at the
Specifications Same principal as the SR5 appears to apply with the CM9.
What would I gain by switching my 802.11b clients to g?
A headache? Do to the fact that 11G joins to adjacent 11B channels together, you have less overlapping channels, and are most likely either going to see more noise, or interfer with yourself. 11G uses OFDM so it is better when using it in an urban enviroment where signals bouncing off of buildings produce multipath. 11G IMHO is an indoor protocol.
Dan