Results 31 to 45 of 45
- 11-06-2003, 02:40 PM #31Thomas T. VeldhouseGuest
Re: What is the optimum range to a tower for good signal?
"TCS" <[email protected]> wrote in message
news:[email protected]...
> Nonsense. It depends on background noise.
>
Background noise will limit the distance, but the lack of it does not extend
it to infinity. Like I said, the *effective* limit of our little 200mW
Digital phones is about 2 miles. I don't know how far it will go in AMPS
mode. This is a PHONE limitation, not a tower limitation. The old bag
phones had a much farther range than our little phones that we use on
Sprint.
Tom Veldhouse
› See More: What is the optimum range to a tower for good signal?
- 11-06-2003, 03:24 PM #32larryGuest
Re: What is the optimum range to a tower for good signal?
Tom,
I disagree because I have pulled in signal from a tower as much as
10-15 miles away when traveling out in the desert. There's a site about
Flagstaff, AZ that covers a huge distance like that.
--
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- 11-06-2003, 03:43 PM #33SumYungGuyGuest
Re: What is the optimum range to a tower for good signal?
Three words for ya Tom: LOW NOISE AMPLIFIER
That's how 200mW gets picked up 15 miles away. That's really pushing it
though. Typical rural sites cover 5-8 miles.
--
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Free wireless access @ www.SprintUsers.com/wap
- 11-06-2003, 03:46 PM #34SumYungGuyGuest
Re: What is the optimum range to a tower for good signal?
Oh, also, I've seen bag phones go as far as 60 miles. In Australia in
the outback they have CDMA 800 boomer sites that go over 50 miles with
tower mounted radios and LNAs.
--
Posted at SprintUsers.com - Your place for everything Sprint PCS
Free wireless access @ www.SprintUsers.com/wap
- 11-06-2003, 03:54 PM #35Gavin ScottGuest
Re: What is the optimum range to a tower for good signal?
Thomas T. Veldhouse <[email protected]> wrote:
> This is a PHONE limitation, not a tower limitation.
Not entirely true. There's this effect that one might call the magic
of a repeater station. The repeater/relay (in this case the cell tower)
can have much higher power output and higher "gain" transmitting
antennas so that the mobile station (the phone) can get away with
smaller and smaller antennas (note that European phones and many US
phones no longer have any externally visible antenna) and they
can also have much higher "gain" receiving antennas and more exotic
(i.e. better signal to noise ratio) electronics, allowing them to
"hear" mobile units with lower effective radiated power due to low
power phones and the previously mentioned dinky internal antennas.
So if you put enough money into your towers, you can improve both
transmit *and* receive performance, allowing you to continue to
make smaller and more power-frugal mobile units.
Background noise is a problem, but you can use more exotic modulation
techniques to greatly improve the effective S/N ratio (which everyone
does).
G.
- 11-06-2003, 04:05 PM #36SumYungGuyGuest
Re: What is the optimum range to a tower for good signal?
Thanks Gavin, I meant to talk about the antennas too. 20dBi directional
gives you a lot of gain.
--
Posted at SprintUsers.com - Your place for everything Sprint PCS
Free wireless access @ www.SprintUsers.com/wap
- 11-06-2003, 04:15 PM #37TCSGuest
Re: What is the optimum range to a tower for good signal?
On Thu, 6 Nov 2003 14:40:52 -0600, Thomas T. Veldhouse <[email protected]> wrote:
>
> "TCS" <[email protected]> wrote in message
> news:[email protected]...
>
>> Nonsense. It depends on background noise.
>>
>
> Background noise will limit the distance, but the lack of it does not extend
> it to infinity. Like I said, the *effective* limit of our little 200mW
actually it does.
Of course, there's no such thing as zero background noise.
> Digital phones is about 2 miles. I don't know how far it will go in AMPS
> mode. This is a PHONE limitation, not a tower limitation. The old bag
> phones had a much farther range than our little phones that we use on
> Sprint.
>
> Tom Veldhouse
>
>
- 11-07-2003, 08:27 AM #38Thomas T. VeldhouseGuest
Re: What is the optimum range to a tower for good signal?
"larry" <[email protected]> wrote in message
news:[email protected]...
>
> Tom,
>
> I disagree because I have pulled in signal from a tower as much as
> 10-15 miles away when traveling out in the desert. There's a site about
> Flagstaff, AZ that covers a huge distance like that.
>
You might receive a signal ... but you can't talk on it. Your phone is
unable to communicate BACK to the tower. Do some googling around and you
will find no references to any 200mW transmitters going more than 2 miles
(actually, I found no references going further than 1.75 miles). There are
plenty of references to 10 square miles which means a distance of 1.78 miles
from the tower.
Tom Veldhouse
- 11-07-2003, 09:04 AM #39TCSGuest
Re: What is the optimum range to a tower for good signal?
On Fri, 7 Nov 2003 08:27:34 -0600, Thomas T. Veldhouse <[email protected]> wrote:
>"larry" <[email protected]> wrote in message
>news:[email protected]...
>>
>> Tom,
>>
>> I disagree because I have pulled in signal from a tower as much as
>> 10-15 miles away when traveling out in the desert. There's a site about
>> Flagstaff, AZ that covers a huge distance like that.
>>
>You might receive a signal ... but you can't talk on it. Your phone is
>unable to communicate BACK to the tower. Do some googling around and you
BULL****. If you can hear during a call, you can talk. You can't even
connect to a tower unless you have working TWO way communications.
Newsflash: towers have higher quality antennas than cell phone's. By
your logic, a cell phone can't possibly receive a call either since it's
antenna is so small, just like it can't possibly send due to it's small
transmitting power.
- 11-07-2003, 01:45 PM #40Gavin ScottGuest
Re: What is the optimum range to a tower for good signal?
Thomas T. Veldhouse <[email protected]> wrote:
> You might receive a signal ... but you can't talk on it. Your phone is
> unable to communicate BACK to the tower. Do some googling around and you
> will find no references to any 200mW transmitters going more than 2 miles
> (actually, I found no references going further than 1.75 miles).
Well, how about 1,650 miles on one microwatt?
http://www.geocities.com/qrpaward/
While there are many things that affect the typical effective range
over which communication can be accomplished given a particular set
of hardware, frequency, and terrain, and you're very probably right
that a couple miles might very well be a reasonable limit to plan
for with today's low-power PCS phones, there's no law of physics
that says it can't be made to work over much larger distances, or
even that you won't see it in some cases with today's phones.
G.
- 11-07-2003, 01:53 PM #41Gavin ScottGuest
Re: What is the optimum range to a tower for good signal?
TCS <[email protected]> wrote:
> On Fri, 7 Nov 2003 08:27:34 -0600, Thomas T. Veldhouse <[email protected]> wrote:
>>You might receive a signal ... but you can't talk on it. Your phone is
>>unable to communicate BACK to the tower. Do some googling around and you
> BULL****. If you can hear during a call, you can talk. You can't even
> connect to a tower unless you have working TWO way communications.
In this case I believe Thomas is saying that the phone can hear the
tower, not that the user can hear one end of a phone call. You're
correct that there can be no call if the two ends can't hear each other
in order to do the connection setup.
It's perfectly reasonable for the phone to be able to hear a tower
but for the tower to be unable to hear the phone. Depending on the
protocols in use, the phone may indicate that it is "in range" yet
when you try to make a call it can't be established because the
tower can't hear the phone.
The paths to and from the phone are completely independent issues,
though much RF engineering goes into balancing power levels and
antenna gain and coverage patterns to try to achieve the appearance
that A can hear B only when B can hear A. Anything else means
you're being inefficient (and users get grumpy when the phone says
it has coverage but can't make a call).
G.
- 11-07-2003, 02:48 PM #42CraigGuest
Re: What is the optimum range to a tower for good signal?
This is not accurate, I have also connected to a tower from a large distance
"Thomas T. Veldhouse" <[email protected]> wrote in message news:<[email protected]>...
> "larry" <[email protected]> wrote in message
> news:[email protected]...
> >
> > Tom,
> >
> > I disagree because I have pulled in signal from a tower as much as
> > 10-15 miles away when traveling out in the desert. There's a site about
> > Flagstaff, AZ that covers a huge distance like that.
> >
>
> You might receive a signal ... but you can't talk on it. Your phone is
> unable to communicate BACK to the tower. Do some googling around and you
> will find no references to any 200mW transmitters going more than 2 miles
> (actually, I found no references going further than 1.75 miles). There are
> plenty of references to 10 square miles which means a distance of 1.78 miles
> from the tower.
>
> Tom Veldhouse
- 11-07-2003, 03:06 PM #43DSL GURUGuest
Re: What is the optimum range to a tower for good signal?
EVERYONE but Veldaus agrees that there is no single answer, and it depends on
power, equipment, geography, useage etc.
And since there can be no single number Tower Maps are useless as coverage maps
without a lot mor einformation than SprintPCS has provided
- 11-07-2003, 03:48 PM #44Bob SmithGuest
Re: What is the optimum range to a tower for good signal?
"DSL GURU" <[email protected]> wrote in message
news:[email protected]...
> EVERYONE but Veldaus agrees that there is no single answer, and it depends
on
> power, equipment, geography, useage etc.
>
> And since there can be no single number Tower Maps are useless as coverage
maps
> without a lot mor einformation than SprintPCS has provided
Once again, you silly little boy, who said these tower maps were coverage
maps?
Bob
- 11-07-2003, 04:28 PM #45Larry ThomasGuest
Re: What is the optimum range to a tower for good signal?
"Thomas T. Veldhouse" <[email protected]> wrote in message news:<[email protected]>...
> "larry" <[email protected]> wrote in message
> news:[email protected]...
> >
> > Tom,
> >
> > I disagree because I have pulled in signal from a tower as much as
> > 10-15 miles away when traveling out in the desert. There's a site about
> > Flagstaff, AZ that covers a huge distance like that.
> >
>
> You might receive a signal ... but you can't talk on it. Your phone is
> unable to communicate BACK to the tower. Do some googling around and you
> will find no references to any 200mW transmitters going more than 2 miles
> (actually, I found no references going further than 1.75 miles). There are
> plenty of references to 10 square miles which means a distance of 1.78 miles
> from the tower.
>
> Tom Veldhouse
Once again not true. There's a tower along 1-10 in the CA desert on
the way to Phoenix that I was able to see and hold conversations on
while 10-15 miles away from it. Sprint provides complete useable
coverage along this stretch and has only 5 towers between Indio and
the AZ state line.
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