Ok, so for example:
I have a channel at NM -10 dB. I thought this meant the signal "in the air." So wouldnt using dBi be correct (I am guessing isotropic means in-the-air, or a no gain antenna).
So, if I have an antenna rated at 10 dBi gain, then you're saying I cannot do -10 + 10 = 0 dB signal NM.
Instead I need to do -10 + 7.49 = -2.51 dB NM?
This means I need to get an antenna about 12.5 dBi gain to get over this 0 dB NM threshold?
|