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Powerline ethernet 85 Mbps turbo works, 200 Mbps doesn't, will 500+ work?
Strange problem with powerline ethernet (bear with me, I know results are highly variable). I originally bought a pair of 85 Mbps (Turbo) powerline ethernet adapters to hook up my AV gear to the router upstairs. After experimenting to find the best sockets, it got about 55 Mbps performance. A couple of years later I upgraded to the Netgear 200 Mbps adapters when they were on sale, and that improved performance between the same sockets to about 90 Mbps. Then I got a cable TV box and router that supported ethernet over coax, and I used that for a while before I had to return it at end of contract. I put the Netgear powerline ethernet adapters back in place, same sockets as before, and they wouldn't connect at all. I tried every experiment I could think of. I unplugged everything that was new in the house since I last had them installed. By moving them to different sockets I eventually got a very poor and erratic connection around 11 Mbps. I experimented with unplugging absolutely everything except the essential components. No good, no improvement. But they still connect at 185 Mbps when plugged into the same wall socket next to each other. Then I put the old 85 Mbps turbo adapters back. They still connect at 45 Mbps, a little worse than before, but not much. So what's wrong here? Has one of the Netgear adapters failed while sitting in the box unused? Is there some strange new source of noise on my power lines that I can't identify that impacts only the frequency range used by the 200 Mpbs adapters? The latter is my concern. If I buy a new set of 500/1000/1200/2000 speed adapters, will they turn out to have the same problem as the 200 Mbps adapters because they are sensitive to interference in the same range? Can anyone think of a test I could do to identify such interference?