WEBVTT - Types of WiFi 0:00:00.320 --> 0:00:02.880 Brought to you by the reinvented two thousand twelve camera. 0:00:03.200 --> 0:00:08.920 It's ready. Are you get in touch with technologies? With 0:00:09.080 --> 0:00:17.200 tech stuff from how stuff works dot com. Hey, there 0:00:17.239 --> 0:00:19.479 are kids, and welcome to tex stuff. My name is 0:00:19.520 --> 0:00:21.800 Chris Pellette, and I'm an editor here at how stuff 0:00:21.800 --> 0:00:26.360 works dot Com. Sitting across from me, as he always is, 0:00:26.360 --> 0:00:31.680 is the smirking senior writer Jonathan Strickland. Hey there, you're 0:00:31.680 --> 0:00:35.120 smirking at my opening my kids thing, right, Yeah, you 0:00:35.159 --> 0:00:37.360 know I mix it up a little. It was I 0:00:37.440 --> 0:00:39.440 never mix it up a little. That's well, you know, 0:00:39.520 --> 0:00:44.440 it's good to humorless. That's true. That's true. Chris kill 0:00:44.560 --> 0:00:46.280 Joy Pillette, that's what we call him here in the 0:00:46.280 --> 0:00:49.320 office at how stuff works dot com. It's said, yeah, 0:00:49.520 --> 0:00:51.360 I would find some humor in it, but I don't 0:00:51.400 --> 0:00:55.160 never mind. Okay, it's better than Josh creepy hands Clark. 0:00:55.560 --> 0:00:58.720 So you know, we all got our own little monikers. 0:00:59.320 --> 0:01:02.200 I won't go into mind because you know, modesty forbids. 0:01:02.760 --> 0:01:06.160 But let's start this off with a little listener mail. 0:01:09.480 --> 0:01:12.560 This mail comes from Mark. Mark says, Dear tech Stuff, 0:01:12.600 --> 0:01:15.040 thanks for a great podcast. I was wondering about how 0:01:15.040 --> 0:01:17.839 wireless home networks work when my dad was talking about 0:01:17.920 --> 0:01:20.920 upgrading ours and didn't know what the different network types were, 0:01:21.240 --> 0:01:24.759 such as wireless G and wireless IN and how networking 0:01:24.800 --> 0:01:27.560 you and not so new computers work and if it 0:01:27.600 --> 0:01:29.680 will cause any problems. I think it would be an 0:01:29.680 --> 0:01:32.039 interesting topic for a podcast because so many people have 0:01:32.160 --> 0:01:35.080 home networks now. Anyway, thanks again for the great podcast 0:01:35.160 --> 0:01:38.560 your seventh grade fan, Mark, well Mark. We thought we'd 0:01:38.560 --> 0:01:42.080 talked a little bit about the different kinds of wireless 0:01:42.720 --> 0:01:45.400 networks out there are the ones that use the various 0:01:45.520 --> 0:01:48.880 standards set out by our good friends at the I 0:01:49.040 --> 0:01:56.440 Triple E, or as I always like to call them I. Yeah. Yeah, 0:01:56.560 --> 0:02:01.120 you know, early early networks were sort of like tin 0:02:01.240 --> 0:02:04.000 cans with the string between them. This sort of makes 0:02:04.040 --> 0:02:07.240 the string virtual. Yeah, there you go. That's all you 0:02:07.280 --> 0:02:14.560 need to know. There's We're all right. So anyway, uh, 0:02:14.919 --> 0:02:17.760 we're talking about a set of standards that in general 0:02:18.040 --> 0:02:22.200 fall under the designation eight zero two point one one. 0:02:22.600 --> 0:02:25.760 Doesn't that easy? Yeah, well it's it's the most those 0:02:25.800 --> 0:02:31.799 are the most common frequency variations of wireless networking. So 0:02:33.240 --> 0:02:36.680 the way you uh, you'll see on things like routers 0:02:36.680 --> 0:02:39.280 and modems, and stuff. You'll see this number followed by 0:02:39.280 --> 0:02:42.639 a letter, and that tells you which of the specific 0:02:42.720 --> 0:02:45.720 sets of standards you're working with. Now you gotta understand 0:02:45.919 --> 0:02:48.960 what I was getting Ready to correct myself because I 0:02:48.960 --> 0:02:53.600 said frequency and that's not a frequency, it's just a designation. 0:02:53.720 --> 0:02:56.440 Is a designation? Yes, so so the I triple E. 0:02:56.600 --> 0:03:03.320 They they work on various designations for different UM networking solutions. 0:03:03.360 --> 0:03:05.440 And with the eight to two point one one, you 0:03:05.480 --> 0:03:08.040 have different working groups all working on different sets of 0:03:08.080 --> 0:03:13.560 standards to try and create the most stable and reliable 0:03:14.000 --> 0:03:19.320 form of wireless networking in this case wireless networking UM. 0:03:19.360 --> 0:03:21.640 And it's it's a little confusing because you have all 0:03:21.639 --> 0:03:24.440 these different groups working on working from the same basic 0:03:24.720 --> 0:03:27.760 set of standards, but they're all tweaking them in different 0:03:27.760 --> 0:03:30.959 ways to try and get different kinds of performance out 0:03:31.000 --> 0:03:34.560 of them. So let's try and go through some of these. 0:03:34.600 --> 0:03:37.960 It's really kind of complex, but um yeah. One of 0:03:38.000 --> 0:03:41.480 the things to uh that's kind of interesting about these 0:03:41.560 --> 0:03:45.240 different standards is, UH, as we start going through them, 0:03:45.280 --> 0:03:48.400 if we are going through them in alphabetical order, you 0:03:48.440 --> 0:03:52.640 will find that they do not necessarily uh go start 0:03:52.640 --> 0:03:55.480 from the bottom up like if we start with eight 0:03:55.880 --> 0:03:59.960 eight O two dot eleven A. Uh, this actually opera 0:04:00.040 --> 0:04:04.080 rates on the five gigga hurts frequency and can carry 0:04:04.160 --> 0:04:08.200 up to fifty four megabets of data per second. Uh. 0:04:08.320 --> 0:04:11.000 In contrast ATO two dot eleven B you'd figured to 0:04:11.080 --> 0:04:14.560 be faster. No, actually it's not. It operates at the 0:04:14.640 --> 0:04:18.000 two point four gigga hurts frequency and only can handle 0:04:18.080 --> 0:04:21.640 eleven megabets of data per second. And that's just one 0:04:21.680 --> 0:04:24.200 of those things that makes it so confusing, is you 0:04:24.200 --> 0:04:26.280 you'd figure there would be a logical progression there, and 0:04:26.320 --> 0:04:29.760 there's not necessarily one. Yeah, so uh, what do you 0:04:29.760 --> 0:04:32.000 think should we go by just by letter even though 0:04:32.040 --> 0:04:34.440 it's not logical progression necessarily, but just to make it 0:04:34.480 --> 0:04:37.520 easier to move from one to the other. Those two, 0:04:37.560 --> 0:04:39.839 those two do fit well together because they were the 0:04:40.000 --> 0:04:46.560 first two very common UM standards, at least in my experience. Well. 0:04:46.600 --> 0:04:52.360 ATO two point eleven B uses uh unregulated radio signal 0:04:52.360 --> 0:04:57.760 frequencies and the two point four gigga hurts range. So uh, 0:04:58.080 --> 0:05:00.080 here's something. Here's some things about the ATO two A 0:05:00.160 --> 0:05:05.200 point one one B set standards. It's single ranges is 0:05:05.240 --> 0:05:07.840 pretty good UM. In the two point four gigg, it 0:05:07.920 --> 0:05:11.480 hurts range, and it's not going to have problems with 0:05:11.520 --> 0:05:15.240 obstructions that some other frequencies do. So in other words, 0:05:15.440 --> 0:05:18.120 you might be able to use this kind of signal 0:05:18.240 --> 0:05:21.200 through walls things like that. You don't have to worry 0:05:21.240 --> 0:05:24.240 about losing signal as soon as you turn a corner 0:05:24.560 --> 0:05:29.320 some UH from the source of the UH. The frequency UM, 0:05:29.360 --> 0:05:34.320 and it's not very expensive. The range is pretty good, UM, 0:05:34.360 --> 0:05:37.520 but it's not a very it's not very fast, as 0:05:37.520 --> 0:05:40.279 you pointed out, you know, compared to eight oh two 0:05:40.320 --> 0:05:45.400 point eleven A. It's it's fairly slow. UM. And because 0:05:45.440 --> 0:05:50.640 it's an unregulated frequency, some other appliances that generate radio 0:05:50.680 --> 0:05:56.440 frequencies can cause interference within that wireless UH frequency because 0:05:56.480 --> 0:06:00.599 you have to remember the computer you're using whatever, Like 0:06:00.640 --> 0:06:04.400 if you have a wireless router that's broadcasting WiFi on 0:06:04.960 --> 0:06:09.280 this set of standards, if it's using unregulated radio frequencies, 0:06:09.279 --> 0:06:11.919 that means that it can fall within a wider range, 0:06:12.360 --> 0:06:16.000 and that things that also generate radio frequencies within that range. 0:06:16.200 --> 0:06:18.400 When you're using your computer, your computer doesn't know which 0:06:18.400 --> 0:06:20.400 one of those which of those signals are coming from 0:06:20.400 --> 0:06:23.680 your router and which are coming from other devices. So 0:06:23.760 --> 0:06:26.800 that's where you get your your interference. And if you're 0:06:26.839 --> 0:06:31.039 saying what kind of interference could you possibly be talking about, Well, 0:06:31.080 --> 0:06:34.080 we're talking about things like your cordless phone in your 0:06:34.080 --> 0:06:38.320 house for example, or UM perhaps an alarm system where 0:06:38.360 --> 0:06:44.039 you have UH wireless UM the devices that go above 0:06:44.080 --> 0:06:46.920 your windows and doors, if it you know it uses 0:06:47.000 --> 0:06:50.800 radio frequencies to talk to the main box, UM and 0:06:51.160 --> 0:06:55.479 baby monitors stuff like that. Those are all using you know, 0:06:55.520 --> 0:06:59.720 those radio frequencies in those ranges. And of course you 0:06:59.760 --> 0:07:03.440 can you can buy cordless phones and are not to 0:07:03.720 --> 0:07:07.920 over use that word range of different frequencies UM. So 0:07:07.960 --> 0:07:09.840 you could try to get to to get around that. 0:07:09.880 --> 0:07:12.880 But UM that's one of those things that UH I 0:07:12.920 --> 0:07:15.360 think they've been trying to improve is is cut down 0:07:15.360 --> 0:07:18.040 on some of the interference. And that's why um ATO 0:07:18.120 --> 0:07:24.120 two eleven A uses the orthogonal frequency division multiplexing. Basically, 0:07:24.160 --> 0:07:27.760 it's it's just a system of splitting down that signal 0:07:27.800 --> 0:07:31.240 into a group of sub signals to kind of make 0:07:31.280 --> 0:07:34.880 it UH less likely that you're going to be interfered with, 0:07:34.960 --> 0:07:37.440 and breaks it down so that it's not all in 0:07:37.440 --> 0:07:39.960 in one UH one signal right, so you're not gonna 0:07:40.120 --> 0:07:44.120 you're not gonna have the same interference issues. UM, it's 0:07:44.160 --> 0:07:46.520 you shouldn't. And again, like we point out, it is 0:07:46.600 --> 0:07:49.560 faster at two point eleven A is faster than NATO 0:07:49.560 --> 0:07:53.160 to a point eleven B. But it's also it's UM 0:07:53.440 --> 0:07:56.080 range is shorter, it's not it doesn't go as far. 0:07:56.240 --> 0:07:59.200 And because of the frequencies that uses UM, it's a 0:07:59.280 --> 0:08:03.640 little more easily obstructed. So you can't necessarily broadcast through 0:08:03.840 --> 0:08:06.080 several walls. If you have a large house and you've 0:08:06.080 --> 0:08:09.680 got a wireless router in the middle, then you may 0:08:09.800 --> 0:08:12.760 notice that as you move away you start having problems 0:08:12.760 --> 0:08:15.120 getting a signal. I also suggest that you don't make 0:08:15.160 --> 0:08:19.320 your walls out of lead. Yeah, I um, never again, 0:08:20.040 --> 0:08:22.680 never again. I tell you one thing. You know what, 0:08:23.040 --> 0:08:25.080 You make your walls out of lead, and you invite 0:08:25.120 --> 0:08:28.320 Superman over. The dude is just a total jerk face 0:08:28.840 --> 0:08:32.680 the entire time. Well he's just hes right, he's just 0:08:32.720 --> 0:08:35.960 standing around, staring at the walls and just mumbling curses. 0:08:36.080 --> 0:08:39.720 I can't even repeat the things that man says. He 0:08:39.960 --> 0:08:43.280 just Oh what a mouth on that guy. At any rate, 0:08:43.360 --> 0:08:45.840 I had no idea that my little joke would turn 0:08:46.000 --> 0:08:49.160 so awry. No, but tell you what, green lantern is awesome. 0:08:49.200 --> 0:08:51.880 You get a few drinks in him. So uh so 0:08:52.000 --> 0:08:54.839 yeah eight to two point eleven A faster, shorter range, 0:08:54.960 --> 0:08:57.880 also was more expensive. Both A and B were being 0:08:57.920 --> 0:09:01.079 worked on at the same time. UM B was even 0:09:01.120 --> 0:09:04.000 though B was slower, it was less expensive and had 0:09:04.040 --> 0:09:06.280 a greater range, so it it caught on a lot 0:09:06.320 --> 0:09:09.560 faster than A did. Um A was much more expensive, 0:09:09.600 --> 0:09:11.920 so you didn't really see that getting adopted in home 0:09:12.000 --> 0:09:14.959 networks as much. But that brings us up to ATO 0:09:15.040 --> 0:09:19.000 two point eleven. G. Yes, we skipped a few letters 0:09:19.000 --> 0:09:22.600 and specifications, yes, um not that. Yeah, I mean you could. 0:09:22.679 --> 0:09:25.920 If you look up all these different numbers, uh along 0:09:26.240 --> 0:09:28.800 with I E. You'll see that there are all these 0:09:28.800 --> 0:09:31.800 different working groups that are working on various projects that 0:09:31.920 --> 0:09:36.000 have different designations. But it gets way too complex to 0:09:36.040 --> 0:09:38.400 talk about all that, especially since it doesn't really relate 0:09:38.400 --> 0:09:41.280 to what we're talking about here with home networking. So 0:09:41.320 --> 0:09:44.120 ATO two point eleven. Yeah, that was A and B 0:09:44.240 --> 0:09:47.600 were popular together for a while, and then G was 0:09:48.480 --> 0:09:51.720 a good sized leap forward. I would say, yeah, I agree, 0:09:51.800 --> 0:09:54.800 and it has been the standard. Um it's been widely 0:09:54.800 --> 0:09:57.960 adopted up until just recently, but we'll get into that 0:09:58.000 --> 0:10:00.480 in a moment. Um ATO two dot eleven G also 0:10:00.559 --> 0:10:04.079 uses the two point for giga hurts spectrum, just like 0:10:04.240 --> 0:10:07.840 at two dot eleven B. However, it is much faster 0:10:08.520 --> 0:10:11.480 band with up to fifty four megabits per second as 0:10:11.520 --> 0:10:14.320 I as I see before me, that's the figure I 0:10:14.360 --> 0:10:18.440 have as well. So yeah, that's really fast speed. And 0:10:18.480 --> 0:10:23.280 it's actually the it has really much better range. It's 0:10:23.320 --> 0:10:25.480 not easily obstructed, so it's it's kind of taking the 0:10:25.559 --> 0:10:28.480 best of both worlds here. It's got the range and 0:10:28.480 --> 0:10:32.200 and uh and the penetration of ATO two point eleven 0:10:32.200 --> 0:10:36.960 B and the speed and um and and uh well 0:10:37.120 --> 0:10:40.480 probably just the speed of two point eleven A UM. 0:10:40.640 --> 0:10:44.079 But it it was a little it's a little more expensive, 0:10:44.320 --> 0:10:46.120 or at least it was more expensive than ATO two 0:10:46.160 --> 0:10:48.599 point eleven B. It took a while for that to 0:10:49.360 --> 0:10:51.320 kind of become the standard and home networks, but that 0:10:51.360 --> 0:10:54.520 did become the standard after shortly after it was introduced. 0:10:55.559 --> 0:10:58.199 And uh so you would look on routers and you 0:10:58.200 --> 0:11:00.520 would see if we know which which, then it was 0:11:01.240 --> 0:11:04.640 compatible within eight or two point eleven G became more 0:11:04.679 --> 0:11:10.840 and more common and uh yeah, again had another problem 0:11:10.840 --> 0:11:14.280 with the fact that it had the unregulated signal, just 0:11:14.360 --> 0:11:18.240 like a two point eleven B did. So again there 0:11:18.240 --> 0:11:20.960 were there was at least the potential for signals to 0:11:21.160 --> 0:11:23.199 have some interference issues if you had a lot of 0:11:23.240 --> 0:11:26.599 other wireless technologies running in the house, a lot of 0:11:26.679 --> 0:11:32.000 kids running around on walkie talkies or you know exactly, 0:11:32.880 --> 0:11:36.800 I'll never be over it. I'm never over kids over 0:11:36.840 --> 0:11:39.120 at my house walkie talkies. That is just the most 0:11:39.120 --> 0:11:41.200 distracting thing in the world, because especially because you don't 0:11:41.200 --> 0:11:44.240 have kids. Yeah that people, how did you get into 0:11:44.240 --> 0:11:47.640 my house? Did Superman let you in? Has he not 0:11:47.800 --> 0:11:52.240 gotten over the lead walls thing? Yet? Does that bring 0:11:52.280 --> 0:11:54.920 us up to two eleven in? Yes? And up until 0:11:55.520 --> 0:11:58.480 very very recently, this was not an approved standard. However, 0:11:59.400 --> 0:12:03.080 UM know I have seen from looking at the WiFi 0:12:03.080 --> 0:12:08.640 Alliance's website, UM that ATO two dot eleven and is 0:12:08.760 --> 0:12:12.920 actually an accepted specification at this time, um, which was 0:12:12.920 --> 0:12:15.920 supposed to happen this year. So you know that those 0:12:15.960 --> 0:12:17.559 of you who are going, yeah, okay, so where's the 0:12:17.600 --> 0:12:19.880 surprise in that. No, that's that's uh, that's right on time. 0:12:19.920 --> 0:12:23.960 They're supposed to do that this year. Um. And UH, 0:12:24.000 --> 0:12:27.200 basically you're supposed to be able to get a lot 0:12:27.280 --> 0:12:31.280 better range with ATO two dot eleven and and speed 0:12:31.320 --> 0:12:33.800 for that matter. UM, that was one of the things 0:12:33.880 --> 0:12:38.320 when I got UM. I got a new wireless access 0:12:38.360 --> 0:12:42.040 point UM a few months ago, and it had a 0:12:42.240 --> 0:12:45.920 proposed ATO two dot eleven and specification in it. Um. 0:12:46.080 --> 0:12:48.439 You know, since I am sitting right next to or 0:12:48.480 --> 0:12:51.640 almost right next to the the access point, I find 0:12:51.640 --> 0:12:56.160 the range is great. But yeah, you are right next 0:12:56.200 --> 0:12:58.640 to it as if you could actually plug your device 0:12:58.760 --> 0:13:01.520 into it with a physical are how great the range 0:13:01.520 --> 0:13:04.960 of details details? Actually? Um, when I was down the hall, 0:13:05.040 --> 0:13:07.400 I actually moved the computer since then, UM no, it 0:13:07.480 --> 0:13:09.480 was it was giving me a much better range than 0:13:09.480 --> 0:13:12.200 the old one, so UM, so you know it was 0:13:12.360 --> 0:13:15.599 it was an improvement. Um. But yeah, the eight to 0:13:15.760 --> 0:13:18.320 two dot eleven N is supposed to get you up 0:13:18.320 --> 0:13:22.360 to a hundred forty megabits per second, which is pretty speedy. Yeah, 0:13:22.480 --> 0:13:26.640 that's considering I can't even get my my DSL connection 0:13:26.880 --> 0:13:32.440 near that fast. So you were asking Mark about the 0:13:32.480 --> 0:13:36.080 difficulties in networking if you have different machines running on 0:13:36.240 --> 0:13:39.800 different uh that require different standards. Yes, that will be 0:13:39.880 --> 0:13:43.040 a problem because you have to have the right it's 0:13:43.120 --> 0:13:44.760 it's like an antenna. You have to the right kind 0:13:44.800 --> 0:13:46.920 of antend to pick up the right kind of frequency. 0:13:47.000 --> 0:13:48.560 And um, it sort of depends on what kind of 0:13:48.600 --> 0:13:51.480 card you have sorright interrupt No, no, go ahead. You 0:13:51.520 --> 0:13:55.000 need to have something that will receive the signals in 0:13:55.040 --> 0:13:59.840 your computer. Um. And uh, you know you can get 0:14:00.000 --> 0:14:02.280 cards that are built right in. And there are also 0:14:02.600 --> 0:14:04.839 different kinds of cards that you can add on an 0:14:04.840 --> 0:14:08.280 aftermarket depending on what kind of computer you have. UM. 0:14:08.320 --> 0:14:10.280 And many of these cards can actually accept more than 0:14:10.320 --> 0:14:12.920 one standard, like they'll they'll say it'll be you know, 0:14:12.960 --> 0:14:15.120 you'll see like a B slash in or something like that, 0:14:15.200 --> 0:14:18.160 or in slash G or Yeah. The chances are actually 0:14:18.160 --> 0:14:20.160 if you go out and buy whatever off the shelf, 0:14:20.200 --> 0:14:23.200 now it's going to be end compatible and backwards compatible 0:14:23.200 --> 0:14:26.680 with the other three standards, which is great. I mean 0:14:26.680 --> 0:14:29.720 if you don't have those compatible ones, then obviously if 0:14:29.720 --> 0:14:31.360 you were to get if you were to have an 0:14:31.360 --> 0:14:35.360 old ATO two point eleven G wireless card and a 0:14:35.440 --> 0:14:38.480 laptop and you got an ATO two point eleven in router, 0:14:39.000 --> 0:14:40.840 it's not gonna do any good. Yeah, you're not gonna 0:14:40.880 --> 0:14:43.840 be able to access those faster speeds because you're limited 0:14:43.880 --> 0:14:46.800 by it's kind of the weakest link in the in 0:14:46.840 --> 0:14:49.480 the chain kind of thing. Um, you're you're limited by 0:14:49.520 --> 0:14:53.480 whatever you are, your least fast device is going to 0:14:53.600 --> 0:14:57.680 be uh in that in that chain from router to computer. 0:14:58.240 --> 0:15:00.840 So yeah, it can cause a little issue. It's not 0:15:00.840 --> 0:15:03.160 not as bad as you might think because most things 0:15:03.160 --> 0:15:05.560 that are most of routers and modems that have been 0:15:05.600 --> 0:15:09.240 sold in the last few years have really kind of 0:15:09.280 --> 0:15:13.200 ironed out a lot of the compatibility issues. Um. But 0:15:13.320 --> 0:15:16.200 that's and you know, again it's kind of confusing because 0:15:16.280 --> 0:15:20.800 the standards do evolve over time and the group is 0:15:20.840 --> 0:15:24.000 always working on different projects. That mean that you know, 0:15:24.080 --> 0:15:26.600 within another five or six years we may see something different. 0:15:26.880 --> 0:15:30.240 And not only that, but we have other networking technologies 0:15:30.280 --> 0:15:33.920 that also come into play that can be a little confusing. 0:15:33.960 --> 0:15:36.880 There's Bluetooth. Actually, it's funny you mentioned that I was 0:15:36.920 --> 0:15:39.800 getting ready to mention please do um. There are a 0:15:39.800 --> 0:15:43.520 couple different standards of Bluetooth technology. Now. Bluetooth UM in 0:15:43.600 --> 0:15:47.760 general has a shorter distance that you can use a 0:15:47.840 --> 0:15:51.200 smaller range. Yes, that's what I meant thank you for 0:15:51.240 --> 0:15:55.680 fixing that. Um hey, who's the editor here? Yeah, well 0:15:55.720 --> 0:15:58.800 that would be me, except when I'm talking. This is 0:15:58.840 --> 0:16:03.360 why I edit. Um. Yeah. It actually operates on frequency 0:16:03.360 --> 0:16:06.960 of two point four five giga hurts. Uh, generally between 0:16:06.960 --> 0:16:09.640 two point four zero two and two point four eight 0:16:09.720 --> 0:16:12.120 zero if you're you know split in hair for those 0:16:12.120 --> 0:16:14.880 of you taking notes, Yeah, yeah, and you can you know, 0:16:14.920 --> 0:16:19.480 connect up to eight devices. Um you find I don't 0:16:19.520 --> 0:16:21.680 think a lot of people use Bluetooth to connect a 0:16:21.680 --> 0:16:23.600 lot of devices to their computer. Exp maybe like a 0:16:23.600 --> 0:16:27.600 wireless keyboarder mouse maybe maybe or or yeah, maybe a printer, 0:16:28.040 --> 0:16:30.880 sometimes your phone. I had a phone that used Bluetooth, 0:16:30.880 --> 0:16:32.600 and I could drag and drop files over like if 0:16:32.640 --> 0:16:35.000 I wanted to change ring tones, I make an MP 0:16:35.120 --> 0:16:37.800 three and and you know, connect with it. The wireless 0:16:37.800 --> 0:16:40.480 The promise of Bluetooth is really really cool in the 0:16:40.520 --> 0:16:44.880 sense that you can have this personal area network and 0:16:45.360 --> 0:16:48.440 you know, you the network would constantly be changing depending 0:16:48.480 --> 0:16:51.760 on what devices you brought within the scope of that network. 0:16:52.000 --> 0:16:54.840 So you can bring two devices together, it creates one network. 0:16:55.080 --> 0:16:57.360 You bring those two devices toward a third device, and 0:16:57.360 --> 0:16:59.840 you've got a new network. You take one device away. 0:17:00.200 --> 0:17:06.800 I mean it's a really flexible UM and and dynamic system. 0:17:06.840 --> 0:17:10.000 It's really really cool. I don't think anyone uses it 0:17:10.040 --> 0:17:13.840 to the to its potential really. I mean, I don't 0:17:14.000 --> 0:17:17.080 know one I know of uses Bluetooth. Like the people 0:17:17.119 --> 0:17:19.520 who use Bluetooth that I know are using the very 0:17:19.600 --> 0:17:23.080 very basic. So it's the headset and the and the 0:17:23.160 --> 0:17:26.720 phone the handset. Um that's pretty much it. Or some 0:17:26.840 --> 0:17:29.280 of them are using some sort of handset and a 0:17:29.280 --> 0:17:31.760 car like the car that's Bluetooth enabled so that the 0:17:31.800 --> 0:17:34.320 handset sinks with the car and they can listen to music, 0:17:34.760 --> 0:17:37.760 or they can use a GPS system something like that 0:17:38.320 --> 0:17:41.679 where or even use the cars sound system for a 0:17:42.640 --> 0:17:44.840 if they're taking on calls or things of that nature. 0:17:45.280 --> 0:17:47.919 But again it's still you're talking about a two device 0:17:48.000 --> 0:17:50.359 maximum there as opposed to what the real potential or 0:17:50.359 --> 0:17:52.480 Bluetooth is. I know somebody else is going to write 0:17:52.520 --> 0:17:54.840 into now that I think about it. Another device that 0:17:54.920 --> 0:17:58.359 you might see people use with their Bluetooth enabled computer 0:17:58.400 --> 0:18:01.480 and be a set of headphones. Yeah, that's that's pretty common. 0:18:01.480 --> 0:18:04.720 That's true. That's true. That is another common one. Um 0:18:04.760 --> 0:18:09.600 and another thing we're another kind of wireless standard. Was 0:18:09.640 --> 0:18:12.399 going to talk about y max. So y max and 0:18:12.440 --> 0:18:16.000 WiFi are two different things. They are not the You 0:18:16.119 --> 0:18:19.200 often will see the media reference why max is saying 0:18:19.200 --> 0:18:23.360 something like WiFi on steroids, which is I mean it's 0:18:23.400 --> 0:18:27.119 an oversimplification. Yeah, it's definitely an oversimplification. Yes, y max 0:18:27.200 --> 0:18:31.120 has a greater range than WiFi standards because it can 0:18:31.119 --> 0:18:33.760 reach up to a thirty miles right, something like somewhere. 0:18:33.760 --> 0:18:37.160 And so wy max has a much larger range. And yes, 0:18:37.240 --> 0:18:41.119 you can get very fast. Uh, down link and uplink 0:18:41.160 --> 0:18:44.720 speeds on y max are relatively fast anyway, about megabits 0:18:44.720 --> 0:18:47.040 per seconds. So yeah, that's pretty fast. I mean it's 0:18:47.040 --> 0:18:48.439 still not as fast as you know, eight or two 0:18:48.480 --> 0:18:51.959 point eleven and but yes, but you're not gonna get 0:18:52.040 --> 0:18:54.840 eight or two down eleven and much past I don't know, 0:18:55.080 --> 0:18:56.800 like the street in front of your house. Yeah, you're 0:18:56.800 --> 0:18:58.760 not gonna That's the other thing is that when we 0:18:58.800 --> 0:19:01.800 talk about these speeds, we're talking about the maximum that 0:19:01.840 --> 0:19:05.280 those devices are capable of generating. That doesn't necessarily mean 0:19:05.280 --> 0:19:07.600 that's the speed you will experience. That will experience it 0:19:08.040 --> 0:19:10.760 based upon what your I s P provides to you. 0:19:11.560 --> 0:19:13.040 Actually when I was saying a few minutes ago that 0:19:13.160 --> 0:19:16.840 my DSL struggles to reach one point five megabet per second. 0:19:17.240 --> 0:19:19.480 You know, I have a my router now is an 0:19:19.480 --> 0:19:21.879 eight or two data eleven n I'm never gonna see 0:19:22.400 --> 0:19:25.639 anything faster than one point five megabets per second, because 0:19:25.680 --> 0:19:27.800 that's as fast as it's gonna go out. Now, if 0:19:27.840 --> 0:19:32.000 I connect with another computer, if I have, you know, say, 0:19:32.080 --> 0:19:33.960 my music library at one computer I want to move 0:19:33.960 --> 0:19:35.600 it to another, I can move it at that speed 0:19:36.400 --> 0:19:39.600 provided my cards in both computers will reach that speed. 0:19:39.640 --> 0:19:42.360 So data transfers within your network will go at at 0:19:42.400 --> 0:19:46.879 the ideal speed, right, But data coming into or moving 0:19:46.880 --> 0:19:50.840 out of your network to the outside world the Internet, 0:19:51.160 --> 0:19:53.280 is going to move at whatever speed the Internet service 0:19:53.320 --> 0:19:57.719 provider has designated, or what your current technology is capable 0:19:57.760 --> 0:20:00.280 of delivering. Yeah, so the slowest point of connect in 0:20:00.280 --> 0:20:02.320 this case would be my you know, pipe to the 0:20:02.359 --> 0:20:05.560 outside world, and everything else is regulated by that, right, 0:20:05.680 --> 0:20:10.159 Everything inside super fast, everything outside not so fast. Still fast, 0:20:10.359 --> 0:20:12.760 just not nearly as fast. As we sit there and 0:20:12.800 --> 0:20:14.560 think about how slow this is. But then we sit 0:20:14.600 --> 0:20:19.440 there and like, hey, do you remember that there's bod modems? Okay, 0:20:19.480 --> 0:20:22.040 so it's very fast compared to dial up modems. But anyway, 0:20:22.119 --> 0:20:24.600 so so wy max getting back to wymax. Um, yeah, 0:20:24.600 --> 0:20:28.600 it's a totally different set of standards. Uh, dot one six. 0:20:28.720 --> 0:20:30.800 I like to I like to describe wy max the 0:20:30.840 --> 0:20:33.560 way I tried to describe it to someone, uh, and 0:20:33.760 --> 0:20:35.479 how it works if you if you want to try 0:20:35.520 --> 0:20:39.040 and visualize it within an analogy is imagine a big 0:20:39.119 --> 0:20:44.560 circular building that has a set number of doors along 0:20:44.600 --> 0:20:47.639 the perimeter of the building. So we'll say forty forty 0:20:47.720 --> 0:20:50.240 doors are along the perimeter of the building. That means 0:20:50.280 --> 0:20:53.280 that forty people can walk in and out of that building, 0:20:53.600 --> 0:20:56.119 carrying stuff in and taking stuff out. So there's forty 0:20:56.119 --> 0:20:58.280 people that would be people connecting to the y max 0:20:58.320 --> 0:21:04.120 tower to get data. So home networks necessary pretty much. Um. 0:21:04.240 --> 0:21:07.600 And after the after those forty doors are taken up 0:21:07.600 --> 0:21:10.320 by the various people, that's it. It's not going to 0:21:10.359 --> 0:21:13.119 accept any more people on that tower, which means that 0:21:13.240 --> 0:21:16.720 every single person is going to still get the speeds 0:21:16.720 --> 0:21:20.119 that they were promised. You know, there's no choking because 0:21:20.160 --> 0:21:23.920 there's no bottleneck there because the tower has cut off 0:21:23.960 --> 0:21:26.600 the number of people who can connect to it. WiFi 0:21:26.680 --> 0:21:29.280 is different. WiFi. People just keep piling in and out. 0:21:29.320 --> 0:21:32.040 There's like one big set of doors and everyone is 0:21:32.080 --> 0:21:33.680 trying to get in and out that set of doors 0:21:33.720 --> 0:21:36.359 at the same time. So the more people are trying 0:21:36.400 --> 0:21:40.320 to access a WiFi spot, the slower you're going to experience. 0:21:40.400 --> 0:21:42.800 The slower the data rates will be slower, data transfer 0:21:42.920 --> 0:21:46.359 rates will be um because it does not limit the 0:21:46.480 --> 0:21:49.640 number like y max does, So it's a different approach 0:21:49.720 --> 0:21:52.680 rely UM and why MAX of course, is just one 0:21:52.840 --> 0:21:55.480 of the four G solutions that we're looking at in 0:21:55.560 --> 0:21:58.040 the in in the future. There are others as well 0:21:58.440 --> 0:22:01.760 as LT, which is long term evolution. Looks it looks 0:22:01.800 --> 0:22:03.400 like those two are going to be fighting it out 0:22:03.440 --> 0:22:07.160 to be the four G standard, depending on on whom 0:22:07.200 --> 0:22:12.200 you ask and where and what what company you happen 0:22:12.240 --> 0:22:15.080 to be working for that is backing which standard. Here 0:22:15.080 --> 0:22:18.600 in Atlanta we're actually seeing WiMAX now up and a 0:22:18.640 --> 0:22:21.120 few other cities in the United States also have Wi 0:22:21.200 --> 0:22:24.080 max now and more are expected to get it within 0:22:24.480 --> 0:22:27.320 the next year. YEP, but LT is on its way, 0:22:27.320 --> 0:22:30.480