Guest guest Posted September 13, 2011 Report Share Posted September 13, 2011 450 MHZ would even penetrate easier correct? What is mad free? Loni  From: charles <charles@...> Subject: Re: Need Help! Date: Monday, September 12, 2011, 10:22 AM  Overhere in Europe LTE is also starting: 4G or LTE will be used on: 450 MHz 700MHz 800MHz 900MHz 1500MHz 1800MHz 2000MHz 2300MHZ 2600MHz. Brussels wants these frequency bands mad free for LTE. The point is, that when they statred 3G or UMTS, the providers dreamed of a golden future, because everybody should be willing to use all those nice applications. However, the promised applications did not arrive and 3G proved to be too slow. Now the providers are dreaming again for a golden future, with all the apps on the iPads, Blackberrys, iPhones and other stuff. They do not realize, that most people just want to chat, send some SMS and foto's. Their budget is limited. The providers now have found out, that their networks can nor handle all the traffic of the masses of data, needed for these applications. So they are mad about people who use apps for phoning for free via the internet, with SMS also. They now have raised the prices of subscription rates, and limited the downloads. Greetings, Claessens member Verband Baubiologie www.milieuziektes.nl www.milieuziektes.be www.hetbitje.nl checked by Norton Re: Need Help! > Many of us didn't know this. Thanks! I didn't know it either, actually... I just did some Google searches after Loni's message, to see what exactly might have changed. > So, 4G LTE is a bandwidth of 8500 Mhz through the air or is that > download speed for computers & cellphones? The one report I saw on bandwidth said that they were getting around 12 Mbit/sec download speeds when using 4G LTE, which is about 8 times faster than my hard-wired DSL connection (1.5 Mbit/sec). Presumably the data " in the air " is pulse-modulated onto the 700 Mhz carrier wave. But there would need to be more pulses to support the faster download speeds. Marc ------------------------------------ Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 14, 2011 Report Share Posted September 14, 2011 Loni wrote: > 450 MHZ would even penetrate easier correct? > Absolutely. Lower frequencies penetrate water bodies (trees, leaves, people) as well as walls, and thicker metal sheeting. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 14, 2011 Report Share Posted September 14, 2011 Marc wrote: > Presumably the data " in the air " is pulse-modulated onto > the 700 Mhz carrier wave. But there would need to be more > pulses to support the faster download speeds. > > The lower frequencies do not support faster bandwidth than higher frequencies. Remember the computer processor has risen in frequency to get faster. The only way for the lower frequencies to have more bandwidth, is to use " spread spectrum " , or multiple frequencies at the same time. Multiple communication pathways. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 16, 2011 Report Share Posted September 16, 2011 >450 MHZ would even penetrate easier correct? >Absolutely. Lower frequencies penetrate water bodies (trees, leaves, >people) as well as walls, and thicker metal sheeting. So are there going to phones that operate at even lower frequencies than 700 Mhz then?  > 450 MHZ would even penetrate easier correct? > Absolutely. Lower frequencies penetrate water bodies (trees, leaves, people) as well as walls, and thicker metal sheeting. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 16, 2011 Report Share Posted September 16, 2011 Loni wrote: >> 450 MHZ would even penetrate easier correct? >> > > >> Absolutely. Lower frequencies penetrate water bodies (trees, leaves, >> people) as well as walls, and thicker metal sheeting. >> > > > So are there going to phones that operate at even lower frequencies than 700 Mhz then? > Not yet. That is almost half the frequency, thus half the speed. There won't be as much desire to use lower frequencies that can be foreseen. Give them time, and somebody will come up with a proposed usage. Right now, the public band around 450 MHz is voice only, with rare exceptions. Police, fire, and other like services are using that. But above and below, across the TV spectrum, I don't doubt somebody will try to find a use for any and all of the newly available space. Especially if it makes money for the FCC, selling that spectrum. Let's worry about what we already know is being developed and rolled out. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 17, 2011 Report Share Posted September 17, 2011 >Right now, the public band around 450 MHz is voice only, with rare >exceptions. Police, fire, and other like services are using that  Thanks for your response ! So are there antennas at police and fire stations putting out this frequency 450 MHz? Loni >> 450 MHZ would even penetrate easier correct? >> > > >> Absolutely. Lower frequencies penetrate water bodies (trees, leaves, >> people) as well as walls, and thicker metal sheeting. >> > > > So are there going to phones that operate at even lower frequencies than 700 Mhz then? > Not yet. That is almost half the frequency, thus half the speed. There won't be as much desire to use lower frequencies that can be foreseen. Give them time, and somebody will come up with a proposed usage. Right now, the public band around 450 MHz is voice only, with rare exceptions. Police, fire, and other like services are using that. But above and below, across the TV spectrum, I don't doubt somebody will try to find a use for any and all of the newly available space. Especially if it makes money for the FCC, selling that spectrum. Let's worry about what we already know is being developed and rolled out. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 22, 2011 Report Share Posted September 22, 2011 Hi Loni, > Thanks for your response ! So are there antennas at police and fire stations putting out this frequency 450 MHz? Loni > Back in the late 1990's I got a scanner to keep from being bored, and I got a book /Radio/ /Call/ from Radio Shack that lists every public and corporate radio registered with the FCC, plus walkie-talkie frequencies, pagers, trains, you name it. It's a thick book. Then there are ham operators and shortwave radio. The world is really awash in RF EMR as compared to over a century ago. One of the 11 bands the scanner covers is a public band between 450Mhz and 470 MHz. Usually the transmitting antenna is up high, on one or more towers on the highest hills of the county. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 22, 2011 Report Share Posted September 22, 2011 Hey ! Â So those frequencies are more penetrating to the walls of anything and must be everywhere as well. Loni -- On Thu, 9/22/11, S son <sandreas41@...> wrote: From: S son <sandreas41@...> Subject: Re: Need Help! Date: Thursday, September 22, 2011, 9:43 AM Â Hi Loni, > Thanks for your response ! So are there antennas at police and fire stations putting out this frequency 450 MHz? Loni > Back in the late 1990's I got a scanner to keep from being bored, and I got a book /Radio/ /Call/ from Radio Shack that lists every public and corporate radio registered with the FCC, plus walkie-talkie frequencies, pagers, trains, you name it. It's a thick book. Then there are ham operators and shortwave radio. The world is really awash in RF EMR as compared to over a century ago. One of the 11 bands the scanner covers is a public band between 450Mhz and 470 MHz. Usually the transmitting antenna is up high, on one or more towers on the highest hills of the county. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 22, 2011 Report Share Posted September 22, 2011 Loni wrote: > So those frequencies are more penetrating to the walls of anything and must be everywhere as well. Loni > Yes, But, they are not On all the time, like masts and WiFi are. Also, all the old radios are analog. Some of the police units are upgrading to digital for security. Quote Link to comment Share on other sites More sharing options...
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