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Archive for the ‘Society-politics’ Category

What is Ham Radio?

Amateur Radio (Ham Radio) is a popular hobby and service in which licensed Amateur Radio operators (hams) operate communications equipment.

Although Amateur Radio operators get involved for many reasons, they all have in common a basic knowledge of radio technology and operating principles, and pass an examination for the license to operate on radio frequencies known as the “Amateur Bands.” These bands are radio frequencies reserved by the Wireless planning commission (WPC) for use by ham radio operators.

Why are Amateur Radio Operators also called “Hams”?

Ham: a poor operator; a ‘plug’ (G. M. Dodge; The Telegraph Instructor)The first wireless operators were landline telegraphers who left their offices to go to sea or to man the coastal stations. They brought with them their language and much of the tradition of their older profession. In those early days, every station occupied the whole spectrum with its broad spark signal. Government stations, ships, coastal stations and the increasingly numerous amateur operators all competed for time and signal supremacy in each other’s receivers. Many of the amateur stations were very powerful. Two amateurs, working each other across town, could effectively jam all the other operations in the area. Frustrated commercial operators would refer to the ham radio interference by calling them “hams.” Amateurs, possibly unfamiliar with the real meaning of the term, picked it up and applied it to themselves. As the years advanced, the original meaning has completely disappeared.

Who is the Typical Ham?

Amateur Radio operators come from all walks of life — doctors, students, kids, politicians, truck drivers, movie stars, missionaries and even your average neighbor next door. They are of all ages, sexes, income levels and nationalities. Whether through Morse Code on an old brass telegraph key, voice communication on a hand-held radio or computerized messages transmitted via satellite, all hams use radio to reach out to the world.

Find out what you can do with ham radio!

What’s the Appeal of Ham Radio?

You can communicate from the top of a mountain, your home or behind the wheel of your car. You can take radio wherever you go! In times of disaster, when regular communications channels fail, hams can swing into action assisting emergency communications efforts and working with public service agencies. For instance, the Amateur Radio Service kept New York City agencies in touch with each other after their command center was destroyed during the 9/11 tragedy. Ham Radio also came to the rescue during Hurricane Katrina, where all other communications failed.

You can use telegraphy, voice, digital and images in communication with other hams. You can even talk to Shuttle astronauts or bounce signals off the moon!

Some hams like to build and experiment with electronics. Computer hobbyists enjoy using Amateur Radio’s digital communications opportunities. Others compete in “DX contests,” where the object is to see how many hams in distant locations they can contact. Mostly we use ham radio to form friendships over the air or through participation in one of more than 2000 Amateur Radio clubs throughout the country.There are over 600,000 radio amateurs in the United States and over 2,000,000 worldwide.

South India Amateur Radio Society

South India Amateur Radio Society is a non-profit organisation at Chennai, they can help you in becoming a Ham or an amateur radio operator in India.

They can be reached at www.siars.org.in

Ham radio Tamilnadu

Would you like to be a ham?  SIARS will help you

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“I would go to the length of giving the whole congress a decent burial, rather than put up with the corruption that is rampant.” — Mahatma Gandhi May 1939

 Over fifty years of congress rule has made the people so immune to corruption that they have learnt how to live with the system even though the cancerous growth of graft persisted…but its high time to ditch away the bastards out of rule and end  the nepotism, to serve the real taste of democratic rule to the poor man in India.  

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Go through the picture below,from the site of our premier space research organisation, ISRO.
Triskaidekaphobia ISRO

Where is PSLV-C13?…what u feel?…cry or laugh?..Its is missing from the series.Triskaidekaphobia??. yes the fear of 13. Its a great shame, that our premier research centre is biased towards hoax astrological logics.Triskaidekaphobia is not even a subject in Indian Mythology. Shame dear “Scientists”( not scientists but technocrats I believe).Believable sources says that there is not even staff bus numbers and room numbers with 13 in ISRO centres,instead they have 12A and the next of it as 14!!!!

Hope Indian science will go ahead far, with this type of innovative approaches 🙂

Shame ISRO shame!!!!!!

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kargil

It took our soldiers,40 days to defeat the Pakistani infiltrations in the most hostile fighting environments.It’s been 10 years since the war got over, but for our soldiers guarding the borders, the battle is still on

Paying homage to the brave hearts who gave their lives to protect our boundaries..

■■■Amar Jawan ■■■

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World blood donors day June 14 poster

June14th is the World blood donor Day(WBDD).There is a need for more people to donate blood on a regular basis, especially in developing countries where blood shortages are particularly acute.WBDD is held  each year as a worldwide celebration to honor and thank those people who donate their blood on a voluntary, unpaid basis: it is a special day to acknowledge these donors who are providing the strongest foundation for a safe and sustainable blood supply.

If you’re a donor, you are great, and every day thousands of people rely on blood and blood products helping then to recover from illness ranging from accidents, surgery severe burns, chemotherapy, hemorrhoids and many more. There are little people whose lives haven’t been touched by donated blood. If you haven’t donated before, it’s never too late to start. Do you know that, less than 3.5% of the eligible population donates now? It doesn’t hurt; it takes less than an hour. Your donation can help up to three people when they split it into whole blood, platelets and plasma, and even you can burn off 650 calories in a single donation!

Do you feel you don’t have much to offer? You have the most precious resource of all: the ability to save a life! Help share this invaluable gift with someone in need.

Donate and share, because, we need each other.

Courtesy and for more details■■■ www.wbdd.org

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Wish u a Happy Diwali…..Enjoy ..

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