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A Simple Introduction to Satellite Radio Technology Technology Articles | August 22 Solo gli utenti registrati possono vedere i link!
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, 2011
A satellite radio is a digital radio signal that is broadcast by a communication satellite, which covers a much wider geographical range than terrestrial radio signals. It is a type of direct broadcas...
A satellite radio is a digital radio signal that is broadcast by a communication satellite, which covers a much wider geographical range than terrestrial radio signals. It is a type of direct broadcast satellite and is strong enough that it requires no satellite dish to receive.
The quality of the broadcasts is higher, the quality of the apparatus's reception is higher and the general coverage of the channel, that is to say the so-called satellite's footprint is far greater as well.?
Radio signals can travel only about 30 to 40 miles past the transmitter. This is why when you are travelling and you drive too far away from the radio transmitter, it becomes static and eventually you lose the signal completely. Whereas satellite radio signal can be sent to more than 35,000 miles (22000 km), with perfect clarity and sound quality.
Satellite radio service ? digital broadcast centers where a huge quantity of music stored ? sends songs and material for the satellites in digital format so that the signal is high-quality sound. The signal is encoded inside the satellite and then re-sent for the repeaters antennas, which then sends it to a radio receiver that decodes and plays sounds.?
The music tracks are catalogued in a comparable way to the MP3 system, which uses names called ID3 tags. Digital compression is a process here by which material is compressed as much as possible with the quantity of bandwidth available on the channel.
Radio services are usually provided by commercial ventures and are subscription-based. The various services are proprietary signals, requiring specialized hardware for decoding and playback. On purchase of the service, the satellite radio device is programmed into a database that allows users to receive specific radio transmissions from specific satellites.?
In order to receive satellite transmissions, you will have to use a special antenna on your decoder. This antenna must be capable of receiving L-band broadcasts for it to be of use. These new antennas are a huge improvement on the parabolic dishes (similar to those used for satellite television) that one used to have to have in order to take advantage of satellite radio technology.
The fact that satellite radio is commercial free for numerous of its channels can also be a major selling point. Presently, key satellite digital radio systems in the world are WorldSpace (covers Africa, southern Europe, Middle East and Asia), XM Radio, Sirius Radio (US and parts of Canada), and MBCo (Japan and Korea).
5 Effective Ways To Exercise At Home Health Articles | December 2, 2014
Gyms do have lots of different sets of expensive exercise equipment to help you reach your fitness goals. But there are some great pieces of equipment that provide good ways to exercise at home that do not cost the earth to buy.
If you to stay fit and healthy but don't like the idea of going to a gym, there are plenty of good ways to exercise at home. When you exercise at home you don't have to drive anywhere to do your workout and you can do it when you want in complete privacy. There are some excellent choices of home exercise equipment that provide great ways to exercise and do not cost a fortune buy. Here are 5 different ones to consider.
1. Skipping Ropes.
One of the the good ways to exercise at home if you are on a budget is to use a skipping rope, or jump rope. They are low cost and provide a great workout for your legs as well as toning your upper body and helping you to lose fat. Skipping also strengthens the heart and the lungs.
2. Resistance Bands.
Some people consider resistance bands as something used by middle-aged ladies. But they have become an integral part of professional body building due to their ability to target many different muscle areas. When using resistance bands for your workout, choose bands with a resistance appropriate to your strength and the exercise you are doing.
3. Exercise Balls.
Exercise balls are used for weight training and physical therapy. They are a little harder to store, but when it comes good ways to exercise at home, to stay on the ball you're forced to engage all your muscles, which builds strength and improves stability. Even sitting on them instead of a chair provides a great work out for the abs. Fitness balls come in many different diameters and prices range depending upon the size and how much pressure it supports.
4. Free Weights.
It is well worth finding out how to exercise at home correctly with free weights so that you can use a full range of exercises including curls, squats, dead lifts, and lunges, all which work different muscle groups. Resistance or strength training is often considered one of the best ways to lose weight because muscles burn more calories, even while they are at rest.
5. Kettlebells.
Kettlebells are originally from Russia and look like a cannon ball with a handle. They are great for combining endurance, cardiovascular, strength and flexibility training. Unlike traditional free weights, kettlebell exercises often involve more repetitions and work several muscles simultaneously, especially the legs, arms, shoulders and lower back. Kettlebells provide good ways to exercise at home for high-intensity interval training.
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