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  #1   Report Post  
a.t.
 
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Default Very Distant TV stations and Antennas

I was wondering if it would be possible to get an antenna that would
pick up a network station in a town about 140 miles from the
transmitter. This is also in a mountainous area of Virginia. The rest
of the channels would be arriving from a town about 50 miles to the
north. I am trying to set up an antenna to get the networks and not
have to get cable. Would it even be remotely possible to recieve such
a signal? Thanks in advnace.

-at

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---------------------------------------------------------
  #2   Report Post  
Joseph Meehan
 
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Default Very Distant TV stations and Antennas

a.t. wrote:
I was wondering if it would be possible to get an antenna that would
pick up a network station in a town about 140 miles from the
transmitter. This is also in a mountainous area of Virginia. The rest
of the channels would be arriving from a town about 50 miles to the
north. I am trying to set up an antenna to get the networks and not
have to get cable. Would it even be remotely possible to recieve such
a signal? Thanks in advnace.

-at

---------------------------------------------------------
---------------------------------------------------------


140 miles is a long way, but if the local conditions are correct and if
the station is powerful enough and if the frequency is right (UHF tends not
to carry so far) then it might. Ask around locally and see if anyone else
can get that station. I might add that an antenna tuned to just that
station and designed for weak signals would be your best chance.

--
Joseph E. Meehan

26 + 6 = 1 It's Irish Math



  #3   Report Post  
ameijers
 
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Default Very Distant TV stations and Antennas


"a.t." wrote in message
om...
I was wondering if it would be possible to get an antenna that would
pick up a network station in a town about 140 miles from the
transmitter. This is also in a mountainous area of Virginia. The rest
of the channels would be arriving from a town about 50 miles to the
north. I am trying to set up an antenna to get the networks and not
have to get cable. Would it even be remotely possible to recieve such
a signal? Thanks in advnace.

Throw enough money at it, you can do almost anything. A tall, tall tower,
with a very directional antenna and a rotator, you MAY be able to bring it
in, at least part of the time. As a kid, I used to DX distant city TV
stations when it got cloudy, and the signal would bounce on the cloud
layers. (one night I got several Tennesee stations clear as a bell in
Bloominton, IN.) But unless you happen to be on a tall ridgetop, a tower
tall enough may be more expensive than several years of satellite service.

Suggest asking your question over on the rec.radio.amateur.antenna group.
They may not like a non-HAM question, but they actually know what they are
talking about over there, unlike me. Alternative- are there any
(non-radio-shack) antenna companies in your area? Cable TV has made most of
the yellow page ads for them go away, but whatever company in your area
that sells antenna towers (look under 2-way radios) may still have an
old-timer around that remembers when tall TV antennas on rural homes were
dirt-common.

aem sends....

  #4   Report Post  
effi
 
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Default Very Distant TV stations and Antennas

"a.t." wrote in message
om...
I was wondering if it would be possible to get an antenna that would
pick up a network station in a town about 140 miles from the
transmitter. This is also in a mountainous area of Virginia. The rest
of the channels would be arriving from a town about 50 miles to the
north. I am trying to set up an antenna to get the networks and not
have to get cable. Would it even be remotely possible to recieve such
a signal? Thanks in advnace.

-at


yes

one of these inline with a good 75 ohm antenna system and an electric
antenna rotator might do it
http://www.radioshack.com/product.as...5Fid=15%2D1170


  #5   Report Post  
Joseph Meehan
 
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Default Very Distant TV stations and Antennas

a.t. wrote:
I was wondering if it would be possible to get an antenna that would
pick up a network station in a town about 140 miles from the
transmitter. ...


140 miles is a long way, but if the local conditions are correct
and if the station is powerful enough and if the frequency is right
(UHF tends not to carry so far) then it might. Ask around locally
and see if anyone else can get that station. I might add that an
antenna tuned to just that station and designed for weak signals
would be your best chance.


In addition try this site for information on the type of antenna needed.
http://www.ve3gk.com/stacked.htm

--
Joseph E. Meehan

26 + 6 = 1 It's Irish Math





  #6   Report Post  
Wayne
 
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Default Very Distant TV stations and Antennas

"ameijers" wrote in
:


"a.t." wrote in message
om...
I was wondering if it would be possible to get an antenna that would
pick up a network station in a town about 140 miles from the
transmitter. This is also in a mountainous area of Virginia. The rest
of the channels would be arriving from a town about 50 miles to the
north. I am trying to set up an antenna to get the networks and not
have to get cable. Would it even be remotely possible to recieve such
a signal? Thanks in advnace.

Throw enough money at it, you can do almost anything. A tall, tall
tower, with a very directional antenna and a rotator, you MAY be able
to bring it in, at least part of the time. As a kid, I used to DX
distant city TV stations when it got cloudy, and the signal would
bounce on the cloud layers. (one night I got several Tennesee stations
clear as a bell in Bloominton, IN.) But unless you happen to be on a
tall ridgetop, a tower tall enough may be more expensive than several
years of satellite service.

Suggest asking your question over on the rec.radio.amateur.antenna
group. They may not like a non-HAM question, but they actually know
what they are talking about over there, unlike me. Alternative- are
there any (non-radio-shack) antenna companies in your area? Cable TV
has made most of the yellow page ads for them go away, but whatever
company in your area that sells antenna towers (look under 2-way
radios) may still have an old-timer around that remembers when tall TV
antennas on rural homes were dirt-common.

aem sends....


Back in the 1950s in NE Misissippi, folks routinely received broadcasts
from stations in Memphis, TN, 109 miles away. The quality of the
reception varied from almost perfect to almost non-existent, depending on
the height of the tower and quality of parts. My aunt and uncle had a 35
ft. tower and excellent antenna with rotator. Their reception was almost
always very good.

--
Wayne in Phoenix

If there's a nit to pick, some nitwit will pick it.
  #7   Report Post  
William W. Plummer
 
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Default Very Distant TV stations and Antennas

a.t. wrote:
I was wondering if it would be possible to get an antenna that would
pick up a network station in a town about 140 miles from the
transmitter. This is also in a mountainous area of Virginia. The rest
of the channels would be arriving from a town about 50 miles to the
north. I am trying to set up an antenna to get the networks and not
have to get cable. Would it even be remotely possible to recieve such
a signal? Thanks in advnace.

-at

---------------------------------------------------------
---------------------------------------------------------

The old "radar range" approximation is that the horizon in nautical
miles is the square root of 2 times the antenna height in feet.
140 sm is about 122 nm. So you need an antenna height of 7391 feet to
see the horizon.
  #8   Report Post  
Greg
 
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Default Very Distant TV stations and Antennas

The old "radar range" approximation is that the horizon in nautical
miles is the square root of 2 times the antenna height in feet.
140 sm is about 122 nm.


I'm confused

122 =1.414x
x=86 feet?
  #9   Report Post  
Curmudgeon
 
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Default Very Distant TV stations and Antennas

Bottom line after all the previous "stuff": At 60 miles from the
transmitter, you're over the horizon...unless of course you're way
higher...like on a mountain top. Sure, you might get signal bounce and
reflection depending on atomospheric conditions, but nothing dependable.
Just like it "might" snow tomorrow.

"a.t." wrote in message
om...
I was wondering if it would be possible to get an antenna that would
pick up a network station in a town about 140 miles from the
transmitter. This is also in a mountainous area of Virginia. The rest
of the channels would be arriving from a town about 50 miles to the
north. I am trying to set up an antenna to get the networks and not
have to get cable. Would it even be remotely possible to recieve such
a signal? Thanks in advnace.

-at

---------------------------------------------------------
---------------------------------------------------------



  #10   Report Post  
Greg
 
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Default Very Distant TV stations and Antennas

Bottom line after all the previous "stuff": At 60 miles from the
transmitter, you're over the horizon...unless of course you're way
higher...like on a mountain top.


I guess that is why those TV stations put up those big towers huh?
I used to watch Richmond TV from DC when the Redskins were blacked out and that
is over 100 miles. I had a 20' mast on the roof of a 2 story house (45' or so).


  #11   Report Post  
James Nipper
 
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As stated in a prior reply, you have to have the height, if you are more
than about 50 miles from the desired station.
That height can come from a TALL tower (not likely) or from a high
location.


I am in a mountain location in North Carolina, at 4200 feet above sea
level. Every day and night, I get signals in the 150 mile range. On
occasion, I have received tv stations from the coast of NC, nearly 400 miles
away. But under routine and normal conditions, I get clear signals from
150 miles and more.

I have a large antenna, on a 40 foot tower ( just to get out of the trees
and well off the ground), and I also use an antenna pre-amp.

Good Luck !!

--James--


  #13   Report Post  
Michael Baugh
 
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Default Very Distant TV stations and Antennas

I see this as a question without enough information. Particularly
the UHF/VHF information.
I used to live near Harrodsburg, KY, and set up an antenna
to recieve "Doctor Who" from the PBS station in Cincinnatti,
Ohio. It was a UHF station.
We were over three times the fringe area distance. In fact,
during a pledge drive, they knew the number we were calling from,
and tested us by asking how many fingers they were holding up.
I did it by removing the LNA from a 10 foot satellite dish, putting
a UHF bow tie antenna in its place, with its own coax, and aimed
it at the horizon.
I did similar stuff for VHF with (true)screen doors serving as the reflector
for a multielement antenna pointed at the doors, which I had mounted
at a right angle to each other, 45 degrees from grade.

a.t. wrote in message
om...
I was wondering if it would be possible to get an antenna that would
pick up a network station in a town about 140 miles from the
transmitter. This is also in a mountainous area of Virginia. The rest
of the channels would be arriving from a town about 50 miles to the
north. I am trying to set up an antenna to get the networks and not
have to get cable. Would it even be remotely possible to recieve such
a signal? Thanks in advnace.

-at

---------------------------------------------------------
---------------------------------------------------------



  #14   Report Post  
ameijers
 
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Default Very Distant TV stations and Antennas


"Michael Baugh" wrote in message
news
I see this as a question without enough information. Particularly
the UHF/VHF information.
I used to live near Harrodsburg, KY, and set up an antenna
to recieve "Doctor Who" from the PBS station in Cincinnatti,
Ohio. It was a UHF station.
We were over three times the fringe area distance. In fact,
during a pledge drive, they knew the number we were calling from,
and tested us by asking how many fingers they were holding up.
I did it by removing the LNA from a 10 foot satellite dish, putting
a UHF bow tie antenna in its place, with its own coax, and aimed
it at the horizon.
I did similar stuff for VHF with (true)screen doors serving as the

reflector
for a multielement antenna pointed at the doors, which I had mounted
at a right angle to each other, 45 degrees from grade.

LOL! Does my heart good to see that the backyard tinkerer McGyver gene has
not died out in this country.

Wish I had a place in the boonies where I could do stuff like that without
the neighbors having kittens.

Keep on tinkering, sir!

aem sends....

  #15   Report Post  
JMagerl
 
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Default Very Distant TV stations and Antennas

I'm not an expert on digital TV but aren't the TV stations supposed to end
analog broadcasting in 2006? You might consider this before you invest alot
of money in towers, amplifiers, and antennas. I live in the far northwest
suburbs of Chicago and if the stations ever dropped analog broadcasting I'd
be up a creek. I cannot receive the digital signals reliably even though the
analog signals come in snow free.

I would post this question at the AVS forum: http://www.avsforum.com. Ask in
the HDTV reception area (even though it's not HDTV). They are very good at
getting reception from weak signals


"a.t." wrote in message
om...
I was wondering if it would be possible to get an antenna that would
pick up a network station in a town about 140 miles from the
transmitter. This is also in a mountainous area of Virginia. The rest
of the channels would be arriving from a town about 50 miles to the
north. I am trying to set up an antenna to get the networks and not
have to get cable. Would it even be remotely possible to recieve such
a signal? Thanks in advnace.

-at

---------------------------------------------------------
---------------------------------------------------------





  #16   Report Post  
Greg
 
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Default Very Distant TV stations and Antennas

I'm not an expert on digital TV but aren't the TV stations supposed to end
analog broadcasting in 2006?


I bet they still have NTSC in 2106 or at least 10 years after the last NTSC TV
is sold.
  #17   Report Post  
~KJPRO~
 
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Default Very Distant TV stations and Antennas

"a.t." wrote in message
om...
I was wondering if it would be possible to get an antenna that would
pick up a network station in a town about 140 miles from the
transmitter. This is also in a mountainous area of Virginia. The rest
of the channels would be arriving from a town about 50 miles to the
north. I am trying to set up an antenna to get the networks and not
have to get cable. Would it even be remotely possible to recieve such
a signal? Thanks in advnace.

-at

---------------------------------------------------------
---------------------------------------------------------


Ask your local dealer.

Depends on signal quality, antenna hiegth, etc., etc...

Buy a quality antenna like Winegard, and add the recommend pre-amp kit that
the local dealer suggest.
The two part pre-amps work the best. They come in all sorts of amplification
ranges.
(some will amp both U/V, some will do one and not the other, Winegard AP
series)

~kjpro~



  #18   Report Post  
Michael Baugh
 
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Default Very Distant TV stations and Antennas

Personally, I thing you need to either go ahead and connect to
cable, or start learning about antennas, particularly rhombics if
you have plenty of space.

Michael Baugh wrote in message
news
I see this as a question without enough information. Particularly
the UHF/VHF information.
I used to live near Harrodsburg, KY, and set up an antenna
to recieve "Doctor Who" from the PBS station in Cincinnatti,
Ohio. It was a UHF station.
We were over three times the fringe area distance. In fact,
during a pledge drive, they knew the number we were calling from,
and tested us by asking how many fingers they were holding up.
I did it by removing the LNA from a 10 foot satellite dish, putting
a UHF bow tie antenna in its place, with its own coax, and aimed
it at the horizon.
I did similar stuff for VHF with (true)screen doors serving as the

reflector
for a multielement antenna pointed at the doors, which I had mounted
at a right angle to each other, 45 degrees from grade.

a.t. wrote in message
om...
I was wondering if it would be possible to get an antenna that would
pick up a network station in a town about 140 miles from the
transmitter. This is also in a mountainous area of Virginia. The rest
of the channels would be arriving from a town about 50 miles to the
north. I am trying to set up an antenna to get the networks and not
have to get cable. Would it even be remotely possible to recieve such
a signal? Thanks in advnace.

-at

---------------------------------------------------------
---------------------------------------------------------





  #19   Report Post  
Travis Jordan
 
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Default Very Distant TV stations and Antennas

William W. Plummer wrote:
a.t. wrote:
I was wondering if it would be possible to get an antenna that would
pick up a network station in a town about 140 miles from the
transmitter. This is also in a mountainous area of Virginia. The rest
of the channels would be arriving from a town about 50 miles to the
north. I am trying to set up an antenna to get the networks and not
have to get cable. Would it even be remotely possible to recieve such
a signal? Thanks in advnace.

-at

---------------------------------------------------------
---------------------------------------------------------

The old "radar range" approximation is that the horizon in nautical
miles is the square root of 2 times the antenna height in feet.
140 sm is about 122 nm. So you need an antenna height of 7391 feet to
see the horizon.


Well, the old radar range calculation isn't very accurate at VHF/UHF
frequencies, but it is close enough to give you a rough idea of the
heights involved in line of sight distances. However, don't forget that
both the TV transmitter and the OP's receiver are going to be elevated,
not 'at the horizon'. You also need to worry about the height of the
obstacles that may be in the path between the transmitter and receiver
(the Fresnel zone), the path loss associated with the frequency used,
tramitter power, receiver sensitivity, antenna gain, and a whole host of
other factors.

Here is a rough approximation that may be useful and/or informative. IF
the TV transmitter's antenna was on one of the Virginia mountain tops at
4200 feet ASL ( http://americasroof.com/highest/va.shtml - the OP
can check with the station or the FCC records for exact height) and
there were no intervening obstacles in the path then it would take a
receiving antenna at 1200 feet ASL in order to be able to "see" (LOS)
the transmitter. Then you have to take into account all the other
factors mentioned. So, if the OP is also on a mountain ridge then it
might be entirely practical to receive the desired TV station.

More information on long distance TV reception:
http://www.geocities.com/toddemslie/UHF-TV-DX.html



  #20   Report Post  
indago
 
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040801 2134 - James Nipper posted:



As stated in a prior reply, you have to have the height, if you are more
than about 50 miles from the desired station.
That height can come from a TALL tower (not likely) or from a high
location.


I am in a mountain location in North Carolina, at 4200 feet above sea
level. Every day and night, I get signals in the 150 mile range. On
occasion, I have received tv stations from the coast of NC, nearly 400 miles
away. But under routine and normal conditions, I get clear signals from
150 miles and more.

I have a large antenna, on a 40 foot tower ( just to get out of the trees
and well off the ground), and I also use an antenna pre-amp.

Good Luck !!

--James--



Yes, I had this in mind, and with a rotor, and the right terrain, what the
OP wanted could be quite obtainable, and maybe even more.



  #21   Report Post  
David Martel
 
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Default Very Distant TV stations and Antennas

Greg,

When converting math into English sometimes the words aren't enough. "the
horizon in nautical miles is the square root of 2 times the antenna height
in feet.140 sm is about 122 nm." Consider that 122= 1.414X fills the bill
but so does 122=(2X)**(1/2). The second equation gives Mr. Plummer's height.
I do not vouch for the correctness of the second equation since I don't know
this field.

Dave M.


  #22   Report Post  
William W. Plummer
 
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David Martel wrote:

Greg,

When converting math into English sometimes the words aren't enough. "the
horizon in nautical miles is the square root of 2 times the antenna height
in feet.140 sm is about 122 nm." Consider that 122= 1.414X fills the bill
but so does 122=(2X)**(1/2). The second equation gives Mr. Plummer's height.
I do not vouch for the correctness of the second equation since I don't know
this field.

Dave M.


d[nm] = sqrt(2 * h[ft])

d[nm] = d[sm]* 5280 / 6080
122 = 140 * 5280 / 6080

from above, d**2 = 2 * h
or, h = d**2 / 2

For d=122, you need a 7442 foot tower to have line-of-sight to the
horizon. But the Earth's curvature could peak halfway between the
sender and the receiver. So, with no diffraction or other effects, you
might get by with an 1861 foot tower.

BTW, here's derivation of the "radar range approximation". Draw a
circle of radius R with center E. This is the Earth. Draw a radius
and label it S (for sender). Where S meets the circle is the horizon.
Draw a second Radius and label it T (for tower). Extend T out beyond
the circle by h (tower height). Draw the tangent from T (tower) to S
(sender). There is a right angle at S between the tangent and the
radius by definition. R+h is the hypotenuse of the right triangle. The
length of the tangent is our d, distance to the horizon from the tower.

By Pythagorus, (R+h)**2 = R**2 + d**2 .
We need to get every thing into feet, starting with d in nautical miles.

(6080*R + h)**2 = (6080*R)**2 + (6080*d)**2
(6080*R)**2 + 2*6080*R*h + h**2 = (6080*R)**2 + (6080*d)**2

Now, h**2 is very small compared to the other terms and can be dropped.
(6080*R)**2 + 2*6080*R*h = (6080*R)**2 + (6080*d)**2

Divide by 6080**2

R**2 + 2*R*h/6080 = R**2 + d**2

Subtract R**2 from both sides

2*R*h/6080 = d**2

Now approximate the radius of the Earth R as 6080 nautical miles,
2*h = d**2

or, d = sqrt(2*h).



  #23   Report Post  
Childfree Scott
 
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You might want to look into how far a digital TV signal can go, I
think they might work better.
  #24   Report Post  
James Nipper
 
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I can't see digital/non-digitial having anthing to do with it. TV
signals are RF, whether the modulation is digital or not.

However, not being an expert, I could be wrong.


--James---


  #25   Report Post  
Chet Hayes
 
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Default Very Distant TV stations and Antennas

I agree with the previous advice as to not investing a lot of money
until you figure out how you're going to transition to digital, which
is under a FCC mandate to happen in the next few years. I would think
this date will get pushed out, but you should at least factor in the
transition to digital. In your case, it may offer some compelling
advantages, as digital doesn't have issues with snow, ghosting, etc.


I'd find where the digital transmitters are located for your area. A
good place to start is www.antennaweb.org


  #26   Report Post  
clifto
 
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James Nipper wrote:
I can't see digital/non-digitial having anthing to do with it. TV
signals are RF, whether the modulation is digital or not.

However, not being an expert, I could be wrong.


I'm no expert on digital either, but I do recall a newspaper article a
while back, from the early days of digital in Chicago; people three miles
from the transmitting antennas were having a great deal of trouble getting
any usable signal. I get the distinct impression that digital needs a MUCH
cleaner signal than analog.

--
To his numbed, buttock-shifting listeners, the great sonorous self-regarding
orotund bromidic banality of Senator Kerry and his multitude of nuances is proof
of how much more serious he - and therefore they - are.
http://www.telegraph.co.uk/opinion/main.jhtml?xml=/opinion/2004/08/01/do0102.xml&sSheet=/opinion/2004/08/01/ixop.html
  #27   Report Post  
Greg
 
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I get the distinct impression that digital needs a MUCH
cleaner signal than analog.


Dropped "bits" in analog is just snow. Dropped bits in digital, beyond what ECC
can reconstruct = garbage.

  #28   Report Post  
Bob in CT
 
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On Fri, 06 Aug 2004 09:56:38 -0500, clifto wrote:

James Nipper wrote:
I can't see digital/non-digitial having anthing to do with it. TV
signals are RF, whether the modulation is digital or not.

However, not being an expert, I could be wrong.


I'm no expert on digital either, but I do recall a newspaper article a
while back, from the early days of digital in Chicago; people three miles
from the transmitting antennas were having a great deal of trouble
getting
any usable signal. I get the distinct impression that digital needs a
MUCH
cleaner signal than analog.


There are people receiving signals at over 60 miles (both digital and
analog). See:

http://www.avsforum.com/avs-vb/

Then any of the HDTV forums.

--
Bob in CT
Remove ".x" to reply
  #29   Report Post  
Terry
 
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Default Very Distant TV stations and Antennas


"Bob in CT" wrote in message
news
On Fri, 06 Aug 2004 09:56:38 -0500, clifto wrote:

James Nipper wrote:
I can't see digital/non-digitial having anthing to do with it. TV
signals are RF, whether the modulation is digital or not.

However, not being an expert, I could be wrong.


I'm no expert on digital either, but I do recall a newspaper article a
while back, from the early days of digital in Chicago; people three

miles
from the transmitting antennas were having a great deal of trouble
getting
any usable signal. I get the distinct impression that digital needs a
MUCH
cleaner signal than analog.


There are people receiving signals at over 60 miles (both digital and
analog). See:


I agree; our experience with both analog and digital inspires this comment
which generally agrees with the "MUCH cleaner signal" requirement.
Without getting into too much detail of the different technologies to any
extent I offer this;
TV, especially digital has got 'better quality' over the years since it was
first introduced as simple black and white, non stereo etc.
So the signal now transmits more bits of information, colour, five channel
sound, program schedules, text of the voice and other information!
Also there is a basic difference in the nature of digital versus analog
signal modulation.
The simplest radio transmission of all was the dot/dash (morse Code). All
that was needed was to able to 'hear' the transmission going on and just a
little bit.. Even with severe noise; noise that perhaps could be stronger
than the radio signal itself, it was only necessary to detect the slight
change in order to be able to read the message! Very slow limited
information but could often be the best or method of last resort!
Next came AM (amplitude modulation) or analog, where the signal strength is
modulated up and down in time with speech music or picture. Again even with
noise as long as it is possible to 'hear' the variation it is usually
possible to read the signal. When TV was introduced analog was used; noise
due to a weak signal or otherwise can interfere with analog TV and may cause
everything from a hissing noise, slipping or rolling of a TV picture or
'snow' on the picture. But in many cases as long as the picture can
resynchronize itself fairly quickly the human eye and ear can tolerate the
slight interruption.
Airlines still use AM modulation for some frequencies because it is still
considered that there will be a better chance of hearing a weak or
interfered with emergency signal from a flying or downed aircraft!
FM, frequency modulation was introduced especially for the sound part of TV
and also for 'FM' stations. Better quality but using much more bandwidth and
it has gained a reputation for 'When it works well the quality is good; very
good, allowing stereo and other high quality sound transmission etc". FM
also used for many VHF police, taxi and military radios systems with the
channels packed much closer together than TV.
Finally digital, where the signal is sort of turned on and off many millions
of times per second, works very well and allows a lot of information to be
transmitted provided there is good bandwidth (bandwidth has to do with speed
of transmission available that's why you can't receive a TV programme over a
telephone dial up on the internet!). This provided the signal is not
interfered which means good clear signal from the digital transmitting TV
station or from a satellite. When all the digits are received the TV
receiver reconstructs the picture and sound etc. perfectly. However if
digits are lost or interfered (due to noise or weak signal or interference)
the receiver lacks the information to reconstruct the picture. We also have
digital satellite and it very frustrating when the screen breaks up into a
series of meaningless rectangles! Interference with the digital signal
sometimes makes loud noises on the sound! Heavy rain with a certain size of
rain drops causes more trouble with our received digital signal than does
snow!
Getting a clear signal path between you and various TV stations which may be
in different directions from your location is important. Also your TV
antenna has to cope with several different frequency channels; so most TV
antenna are a compromise!
The biggest current issue that is IMO worth mentioning to posters is
'interference'; it appears that the profusion of electrical devices we use
today, everything from a Christmas Tree light flasher, microwave oven, light
dimmer switches, our personal computers, hair dryers/shavers, blenders etc.
etc are not manufactured or regulated to standards by the FCC (or other
regulatory authorities in other countries) so they do emit interference or
radio energy, which they should not?
The most current of these is some trials of sending digital and internet
signals over the power lines; commonly called BPL. BPL trials in a number of
countries have been cut short because of interference with critical services
such as ambulance, police and aircraft to ground communications! The problem
with BPL being that the overhead wires are carrying not only the electrical
energy they were designed for, which doesn't radiate to any great extent.
But for these other radio/digital signals; the overhead wires are in effect
a very large and very extensive transmitting antenna!
So if you get 'interference' complain to your political representative for
proper regulatory enforcement of electrical/radio standards!
If you have a weak signal, well that's what you have to work on! Better
antenna for that channel, pointing the right way (remove any hills or
skyscrapers that are in the way!), don't live under a landing flight path or
with a busy highway with metal vehicles whizzing by right in the sight line
between you and the TV station and you should be OK analog or digital.
Good luck.


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