Archive for May, 2012
Reality TV is far from educational but you have to admit that they are damned well good fun to watch.
I can not speak for others and I have no jurisdiction over television stations that air these types of programme. However this type of entertainment can be very fulfilling in providing pleasure to viewers who get withdrawal symptoms should they not get their weekly fix of reality TV.
Then we have the vast majority who find it all so false and irritating.
Who do you please? A catch 22 situation,
Why the big issue over the showing of these series is beyond me. No one twists your arm up your back to view the antics of the Big Brother house; no one holds your head steadfast while you squirm at the creepy crawlies swallowed by the inhabitants of the Australian jungle.
There is no imposed law out there stating that you the viewer have to watch this garbage as some would see it. Millions of people tune into their favourite channels and are content to watch what they enjoy, and if reality TV is one of those channels, then so be it.
Freedom of choice, so many laws out there dictating how we run our lives with out some critic sticking the oar in to scrap reality television all because it is not educational.
If people want educating then surely they will tune into the discovery channel, where they get to see the gruesome remains of bodies unearthed for DNA testing.
For updates as to what is going on around the world we have the CNN news showing the bombings in Iraq followed by flashes of pictures of bony skeletal starving kids in Africa. Read the rest of this entry »
A satellite TV system is a very technical, highly complex system of equipment including
a satellite uplink station, the satellite out in space orbiting in a geosyncronous
orbit 22,300 miles above the earth’s equator, the small mini-dish receiving unit
located on a house or business and last the receiver (black box) that connects to
your television and allows you to view the satellite programming. Commercial
satellite TV programming has been around since the 1990′s and today it is making
huge gains on the cable TV market as more and more Americans are taking advantage
of better picture and audio quality, lower monthly prices than cable and free
equipment and installation that both major U.S. satellite providers, DISH Network and
DIRECTV provide. But just how does satellite TV work? In this article we’ll take
a detailed look at the various steps involved along the way to producing such a
crystal clear and reliable picture on your television set.
Satellite TV – The Basics
Satellite TV uses a wireless system of transmitting radio signals to deliver its
television programming to the viewer’s home or business. A radio signal can only
travel in a straight line however. Enter the satellite. By placing an
orbiting satellite at 37,000 km (22,300 miles) above the earth and having it match the earth’s rotational speed (7,000 miles per hour) the satellite stays over the same spot above the earth.
This is referred to as being in geosyncronous orbit. These orbits are sometimes
also referred to as Clarke orbits in honor of Arthur C. Clarke who first came up
with the idea in an article he wrote back in 1945 entitled “Extraterrestrial Relays”
published in Wireless World Magazine. The orbiting satellite then retransmits the
radio broadcast signal back down to earth to the receiving satellite dish (mini-dish)
located on your home or business. The signal then travels through coaxial cables
from the dish into the receiver that is connected to your TV, where the signal is
then descrambled into viewable programming for your family to enjoy.
Satellite TV programming that you watch at home begins with a transmitting satellite
dish or antenna located at what is known as an uplink station. The satellite dish
located on your house is only 18″ in diameter and is tiny compared to the huge satellite
dishes used at uplink stations. These satellite dishes can be as large as 9 to 12
meters (30 to 40 feet) in diameter. The great size of these satellite dish transmitters
allows for a much stronger radio signal and for better aiming of the signal at the
orbiting satellite. The uplink dish is pointed toward a specific satellite and the uplinked
signals are transmitted within a specific radio frequency range, so as to be received by
one of the transponders tuned to that frequency range aboard that satellite. The
transponder ‘retransmits’ the signals back to Earth but at a different frequency
band (to avoid interference with the uplink signal), typically in the C-band (4-8 GHz)
or Ku-band (12-18 GHz) or both. The leg of the satellite signal path that transmits
the signal down to the Earth station is known as the ‘downlink’. Satellites can
have up to 32 transponders for Ku-band and up to 24 for C-band only satellites.
Typical transponders each have a bandwidth between 27 MHz and 50 MHz. Geostationary
Kc-band satellites need to be spaced at least 1 degree apart to avoid signal interference.
For C-band satellites the spacing needs to be at least 2 degrees.
Satellite Signal Technology
Original satellite broadcasts are converted into a high-quality, uncompressed digital
stream containing a lot of data, and sends it at a speed of 270 megabits per second (Mbps)
for each channel. All of this data must be compressed however or the satellite
would not be able to receive the information. The system of compression used in the U.S. is the MPEG-2 compressed video format. This is similar to the system used to make DVDs. The provider could now reduce the 270-Mbps stream to about 5 or 10 Mbps, enabling them to transmit about 200 channels, instead of the 30 they could transmit before compression. These signals are scrambled so that only paid subscribers can receive them.
Unlike their predesessors, today’s satellite dishes are small, only 18″ in diameter
and are referred to as a ‘mini-dish’.
A typical satellite dish consists of two parts: the reflector and the feedhorn. The reflector
is the concave dish-shaped part of the antenna. This is the part of the antenna that
captures and focuses the satellite signal onto the feed horn. The feed horn is the part
of the antenna that is mounted on an arm that sticks out from the relector dish. It takes the
signal and feeds it through a cable to your satellite receiver (black box).
Newer satellite dish designs feature multiple feed horns. This is
so the dish can pick up signals from several satellites and clearly focus the captured
signal on one of the several feed horns.
Something called a feed horn has a feature known as a low noise
block down converter (LNB). This provides for clear signal. The LNB does two things:
It amplifies the signal received from the satellite provider, and filters out ‘signal noise,’
radio signals that do not carry the satellite provider’s television programming.
The satellite receiver is simply the black box that is connected to your television
set. It receives the signal from your mini-dish and then de-scrambles the signal into
viewable pictures for your family to watch. The receiver does three main things:
It receives and de-scrambles the signal which contains the programming.
It separates the programming into the individual channels you request by way
of the channel selector button on either your TV or your remote control.
It tracks your Pay Per View usage, and sends your billing information for this
programming to your provider.
Today, there are several different kinds
of receivers: standard receivers, DVR receivers and HD receivers for receiving
high definition (HDTV) television programming. DVR (Digital Video Receiver) players
allow the viewer to actually Pause and Replay live TV and to record up to 70
hours on the DISH Network DVR 311 or 322 players. The DISH Network DVR receiver
is an advanced dual tuner, two TV output satellite receiver and integrated digital
video recorder (DVR). The DISH Network DVR’s were designed so that you never have
to miss another favorite TV show again. No matter what your schedule; with the Dish
Network DVR you can simply record your favorite shows with just the click of a button.
DISH Network offers over 500 programming channels to choose from and all
DISH Network satellite programming comes in 100% all-digital video and audio.
So how does satellite TV work? In a word – perfectly.
If in case you can’t afford to subscribe with cable television, there are so many alternatives out there. If you are going to look for the best cable TV alternatives, what would they be? But why is it that you are going for an alternative? Is cable or satellite television not good enough for your entertainment needs? Or are you out of the budget for good? For some reason, most of us are going to say that we can’t commit to subscribe with any cable service provider.
If you are looking for alternatives, here are they:
1. Satellite TV
This kind of television is one of the most common appliances today. Basically, a satellite television provider will attempt to install the program on your television set. As long you are subscribed with a satellite TV provider, the technicians will go to your residence and provides services to you. If you were experiencing technical problems about your satellite TV, you may contact their customer service hotline through phone or mobile. E-mail and instant messaging is also an option for you to contact them. Satellite TV is a good cable television alternative like no other.
2. Internet TV
Another cable television alternative would be the internet TV. In this kind of TV, you are allowed to watch various TV shows in your computer. As long you have an internet connection, you can watch anytime you want. But there are certain products and tools you need to install the internet television. Some of them are software-based while others are online-based. For most customers, software-based internet TV is more effective like no other. You can install the software and enter its registration key to get access with the TV shows. Read the rest of this entry »