3 ms·

it really depends on the coax involved. The old stuff put in homes is abysmally bad for cable TV at 700 or so MHz. So at triple the frequency it is really bad.

it really depends on the coax involved. The old stuff put in homes is abysmally bad for cable TV at 700 or so MHz. So at triple the frequency it is really bad. The APs are nominal 50 ohms, and the coax is 75 ohms. So that alone is a huge loss that is present twice in the system. Also sometimes the coax takes insane routes because the installer couldn't be bothered to run it the shortest distance. It isn't hard to find a scenario where two APs with dipoles technically have less loss than a run of coax. The advantage the coax has is noise floor, which is what actually determines the bandwidth of a communications channel.

Dylan16807 3y ago
> The APs are nominal 50 ohms, and the coax is 75 ohms. So that alone is a huge loss that is present twice in the system. Is the impedance mismatch worse than the 40 decibels of loss you get just by having antennas? Shouldn't it be pretty small? And you can correct for it, can't you? > The old stuff put in homes is abysmally bad for cable TV at 700 or so MHz. So at triple the frequency it is really bad. What kind of cabling should I assume? RG-59 loses about half a decibel per meter at 2.4GHz. So if someone is 30 meters away, but it's 60 meters via coax, both methods should give them 30 decibels more loss than at 1 meter away. The total loss is still over twice as bad for the antenna connection. And that's with no walls. What does a situation look like where the antenna technically has less loss?