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Author: RadiumRadium Date: Jul 15, 2007 13:24
> how would u like to change the cell phone industry?
Analog cells phones should stop using FM and should start using AM
with SHF frequencies - at least 3 GHz and at most 30 GHz.
http://en.wikipedia.org/wiki/Super_high_frequency
I choose SHF frequencies because SHF seems to be the sweet spot
between frequencies that are high-enough to rip through charged
particles & provide large amounts of bandwidth, yet low-enough to be
wireless and long-distance. At EHF and above, it starts to get into
the IR range where long-distance wireless reception is not possible
and atmospheric opacity begins to dominate.
Equally important, SHF frequencies can efficiently transmit signals
using extremely small transmitters. Longer wavelengths require larger
transmitters.
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Author: jimpjimp Date: Jul 15, 2007 13:45
In rec.radio.amateur.antenna Radium gmail.com> wrote:>> how would u like to change the cell phone industry?
> Analog cells phones should stop using FM and should start using AM
> with SHF frequencies - at least 3 GHz and at most 30 GHz.
Analog cell phones are going away.
Cell phones already use frequencies in the 3 GHz region.
You are an idiot.
--
Jim Pennino
Remove .spam.sux to reply.
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Author: Brenda AnnBrenda Ann Date: Jul 15, 2007 13:56
>
> Cell phones already use frequencies in the 3 GHz region.
>
Really? Which ones? I'm only aware of cell systems using 800, 900, 1800 and
1900 MHz. There are some (very few) multisystem phones that use all four of
those ranges.
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Author: Jeff LiebermannJeff Liebermann Date: Jul 15, 2007 14:14
Radium gmail.com> hath wroth:
>> how would u like to change the cell phone industry?
Maybe if the entire cellular infrastructure would move up to the LMDS
26-30GHz band, I might recover some of the money I sunk into an LMDS
startup. Great idea. I like it.
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Author: RHFRHF Date: Jul 15, 2007 14:28
On Jul 15, 1:24 pm, Radium gmail.com> wrote:>> how would u like to change the cell phone industry?
>
> Analog cells phones should stop using FM and should start using AM
> with SHF frequencies - at least 3 GHz and at most 30 GHz.
>
> http://en.wikipedia.org/wiki/Super_high_frequency
>
> I choose SHF frequencies because SHF seems to be the sweet spot
> between frequencies that are high-enough to rip through charged
> particles & provide large amounts of bandwidth, yet low-enough to be
> wireless and long-distance. At EHF and above, it starts to get into
> the IR range where long-distance wireless reception is not possible
> and atmospheric opacity begins to dominate.
>
> Equally important, SHF frequencies can efficiently transmit signals
> using extremely small transmitters. Longer wavelengths require larger ...
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Author: RHFRHF Date: Jul 15, 2007 14:29
> In rec.radio.amateur.antenna Radium gmail.com> wrote:
>>>> how would u like to change the cell phone industry?
>> Analog cells phones should stop using FM and should start using AM
>> with SHF frequencies - at least 3 GHz and at most 30 GHz.
>
> Analog cell phones are going away.
>
> Cell phones already use frequencies in the 3 GHz region.
>
> You are an idiot.
>
>
>
> --
> Jim Pennino ...
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Author: RHFRHF Date: Jul 15, 2007 14:30
On Jul 15, 2:14 pm, Jeff Liebermann cruzio.com> wrote:> Radium gmail.com> hath wroth:
>>>> how would u like to change the cell phone industry?
>
>>Analog cells phones should stop using FM and should start using AM
>>with SHF frequencies - at least 3 GHz and at most 30 GHz.
>
>
> Maybe if the entire cellular infrastructure would move up to the LMDS
> 26-30GHz band, I might recover some of the money I sunk into an LMDS
> startup. Great idea. I like it.
>
> Of course, there are problems. Nobody makes an economical mm wave
> handset. There will probably need to be 8-10 times more cell sites
> built than are currently in use on 800/900 and 1800/1900MHz. Of
> course mm wave propagation is affected by just about everything, so it
> probably won't work indoors. No problem, just add more cell sites and
> repeaters. Of course you couldn't get away with the existing ...
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Author: RHFRHF Date: Jul 15, 2007 14:31
On Jul 15, 2:24 pm, Don Bowey comcast.net> wrote:>
>>> how would u like to change the cell phone industry?
>
>> Analog cells phones should stop using FM and should start using AM
>> with SHF frequencies - at least 3 GHz and at most 30 GHz.
>
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Author: RHFRHF Date: Jul 15, 2007 14:31
On Jul 15, 1:56 pm, "Brenda Ann" shinbiro.com> wrote:> specsol.spam.sux.com> wrote in message
>
> news:vhdqm4-am8.ln1@mail.specsol.com...
>
>
>>> Cell phones already use frequencies in the 3 GHz region.
>
> Really? Which ones? I'm only aware of cell systems using 800, 900, 1800 and
> 1900 MHz. There are some (very few) multisystem phones that use all four of
> those ranges.
. . .
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