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seen Nov 24 at 3:34

Oct
26
asked Change playback device “default format” in Windows 7 from command line
Oct
13
awarded  Popular Question
Sep
8
awarded  Notable Question
Nov
6
awarded  Popular Question
Jun
23
comment Connecting a Wifi router to receivers with a cable instead of antenna?
Ah, thanks for yet another great edit. I don't think superuser notified me of it, unfortunately, so it took a while to notice. I was, indeed, ignoring the effect of splitting on the signal power, and your explanation clears a lot up. I'll need to brush up on my logarithmic math to continue with issues like this, but your responses have gone a long way towards understanding. If only there was more I could do for your answer than upvote and accept it--you have been incredibly helpful.
Jun
23
comment Connecting a Wifi router to receivers with a cable instead of antenna?
Afaik, antennas work through change in the current passing through them, so I thought that the receiver of the signal might expect a 90 degree shift in the result signal. Also, this is obviously not an ordinary situation--not even for home everyday use. I've already mentioned that I do want to use Ethernet for this, it's just a matter of what is required. I also realize that the cable between the router and the client is basically a big antenna, but that seemed way oversimplified when I first thought about it. Thanks for your answer, though; it was the first, and it did say that it works.
Jun
22
comment Connecting a Wifi router to receivers with a cable instead of antenna?
I'm not sure I understand... does blowout not apply when I want a strong signal? Maybe it'll be better for me to give some stats on what I'm thinking might work, and you could confirm or deny: one 30dB attenuator attached to the access point. After that, a 1-to-4 splitter with 22dB isolation. Attached to each output, a 1-to-8 splitter with 22dB isolation. And to each of those 32 outputs, a 30dB attenuator, and then the client. This makes the minimum dB between clients 82dB, the maximum dB between clients 104dB, and keeps the dB between any client and the AP to 60dB. Thanks for your patience.
Jun
22
comment Connecting a Wifi router to receivers with a cable instead of antenna?
Thanks for the update, I was wondering where the 60dB came from. I think I'll still need to look up exactly what some of the terminology means, but I think I at least get your math for getting the 60dB (after remembering that dB is a logarithmic unit). I'm not doing Wifi testing, though, so while your second paragraph is very interesting, it doesn't help me much. I'm still not sure why a bunch of clients (thanks for the word, btw, rather than the fallacious "receiver" I used) would overload each other. Could you address that in more detail? Thanks so much for your responses.
Jun
22
awarded  Commentator
Jun
22
comment Connecting a Wifi router to receivers with a cable instead of antenna?
Hmm, the receivers blowing each other out would indeed be unfortunate. The number of clients I'm really going for is around 25, but I'm sure that has the same issue. Forgive my lack of knowledge about how RF works in cables, but why would this happen? If every path is attenuated 60dB (or more), what makes them blow each other out? I just noticed a stat on these splitters called "isolation" rated in dB--would high-dB isolation help the clients not destroy each other?
Jun
22
comment Connecting a Wifi router to receivers with a cable instead of antenna?
Ah, I just realized the point of putting equal attenuators on each cable out from the splitter, and I realize my last statement about insertion loss is probably incorrect--two cables sharing the same splitter would only have the insertion loss of that one splitter, while there would be a much greater loss when the path is through many splitters. If I'm thinking about this right, I'm best off finding low-loss splitters and putting attenuators adjacent to every endpoint.
Jun
22
accepted Connecting a Wifi router to receivers with a cable instead of antenna?
Jun
22
comment Connecting a Wifi router to receivers with a cable instead of antenna?
Fantastic! I actually need many more splitters than one, so this is perfect. I'm aiming for about 32 receivers connected to the AP, so I think that the insertion loss might be enough to cover the 60 dB. (Correct me if I'm wrong.) If not, I'll just put in extra attenuators. Thanks a lot for this answer.
Jun
22
comment Connecting a Wifi router to receivers with a cable instead of antenna?
Hmm, thanks. I mentioned a switch as a part of the Ethernet network I'd rather do, though, not as a part of the Wifi wired network. The wires would be very short, so not much resistance until I try to put in the splitters to make it multi-receiver. Interesting that there's no fundamental property of antennas that makes this impossible though.
Jun
22
asked Connecting a Wifi router to receivers with a cable instead of antenna?
Jun
21
comment Using VMware's ESXi, can I plug in 30 USB Wireless adapters and allow each of 30 VMs one?
True, I should look into contacting them before making a decision about this. It may all be unnecessary, though--there are options besides many usb network adapters. I'm just exploring all options and this happened to be particularly difficult to investigate. I did manage to find a Russian article with a table of supported usb devices, though; a USB wireless adapter and USB ethernet adapter are included. (esx.cx/p/unsupported-usb-device-models-for.html) I don't trust this source too well, but if I need to test this idea I can at least select an adapter that someone else has working.
Jun
21
comment Using VMware's ESXi, can I plug in 30 USB Wireless adapters and allow each of 30 VMs one?
Sorry for all the comments, but I'm pretty sure I messed up... I didn't understand that there is a difference between USB controllers and USB devices. In that same document, it says that 20 USB devices can be added to a single VM, which contradicts my earlier thought that only 15 would be allowed and re-expands my search. Sorry again for the commentspam, and thanks for the links.
Jun
21
comment Using VMware's ESXi, can I plug in 30 USB Wireless adapters and allow each of 30 VMs one?
(I was going to add that I'm currently looking into this, and will post another question if I can't find the information I'm looking for--but I ran out of characters. Thanks for the help, Linker3000!)
Jun
21
awarded  Scholar
Jun
21
accepted Using VMware's ESXi, can I plug in 30 USB Wireless adapters and allow each of 30 VMs one?