October 12, 2009

Transmitters


Have you wondered where this world would end up without communication? It is very hard to even conceive what will happen to mankind when every mode of communication stops working. The very thought is frightening and the whole world will no doubt be in great chaos. Two way radio Communication helps in sharing or informing the latest happenings and the news around the world. It is used vastly for personal, commercial and security reasons. Hardly anyone leaves home today without his mobile phone. In order to have uninterrupted communication network effective transmitters are used.

What are transmitters and why are they considered so important in the world of two way radio communication? A Transmitter is an electronic device which with the help of the antenna broadcasts electromagnetic signals used for radio, television and telecommunication. To make it simple, a transmitter sends information to the receiver through objects like antennas, towers etc. We generally call our mobile handsets, receivers. The data which is transmitted from another form passes through a network of transmitters before reaching our mobile receiver.

A data from a two way communication network is transmitted from the one place to the satellite and again back to the place it is sent. In this case the satellites work as transmitters by receiving data and converting them and sending them back to the receivers. This transmitted data cannot be said as safe as anyone with little knowledge on hacking this data can easily steal them. This generally happens with highly secretive emergency communication by the armed, air or naval forces.

The security communication systems used highly powerful transmitters whose frequency cannot be reachable. Moreover many governments have introduced strict laws against this danger and the risk of highly secured data being stolen. Industrial sector uses transmitters for its process control. But these transmitters are used to convert the sensors measurement into signals. These measurements from sensors are sent through wires to distant receivers. It uses digital protocol to measure variables in a range.

Alexander alternator or mechanical alternator was used in the olden days for radio, engineering and frequency. Later, vacuum tubes were used as transmitters in the 1020’s. After a lot of advancement and evolution transmitters today are capable of handling huge volumes of data transfers and are encrypted and secured. These are fed from high voltage power supply to ensure security. The possible risks to transmitters are lightning and hence the transmitters must be well protected.

Without antennas the transmitters can be damaged so all steps must be taken to ensure the safety of the transmitters. Protection must also be provided from high voltage and correct voltage of current. During times of lightning the transmitters must be switched off immediately. At the same time the place or building on which the transmitters are set up are also very important. Thus for an efficient working of a high power transmitter proper safety and security measures must be taken. Transmitters are very imperative for all types of two way radio communication systems.

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