What is a Ham Radio?
In recent days the internet and the smart phone have taken the vital role in the communication world. In this situation ham radio has come as new communication media with lots of fun and recreation source. With the help of a ham radio you can talk to your friends and family members not only locally and internationally but also if they remain in space.
Apart from this you can save yourself and others in the ocean catastrophe. In such a situation someone somewhere will hear you over ham radio. Numerous types of ham radio have come up in recent market as such it is very difficult to find best ham radio for you.
However we will go in detail in order to overcome the problem. In short we can say that ham radio is used and can be used only non commercial base. Nobody can be financially benefitted with the help of this ham radio. This is just for fun, recreation, testing, and experiment and to tackle an emergency.
The fantastic feature that it provides when the cell connection is dead and the internet connection is stopped this ham radio will rescue you. As such you will never feel yourself alone whatever disaster strikes you.
Now you can say that ham radio is an excellent piece of equipment which can be recommended when you are availing a voyage in far reaching remote place, even on hill and mountain top. At this position you can easily distinguish this ham radio communication from 2 other communications via Smartphone and internet although there is some restriction to use this ham radio.
You are to take some test and possess some license from proper authority. We however assume that these processes will be more easily in due course thinking over the necessity of this ham radio.
Ham radio has another name as amateur radio. Here amateur means an authorized person who can use this type of radio for fun, experiment and emergency communication but in no case he can gain financial benefit out of this radio. These amateur operators are called as hams.
So when there is a conversation between 2 operators one operator calls the other operator as ham. There are three types of ham radio, one is portable, one is mobile and other is ham radio base station. It has been noted that the ham radio or an amateur radio is used for:
- Normal communication
- Emergency communication
- Self experiment
- Self training
- Contesting in games and sports
About 100 years ago radio was known as wireless telegraphy and the earlier amateur operators were called wire operators and subsequently these professional operators called other operators as “HAM”.
The origin of HAM comes from three letters H, A, M. From the detail research it has been found that three scientist namely Heinrich Hertz, Edwin Armstrong and Gug lielmo Marconi were the pioneers in radio communication.
From these names the three letters HAM are collected the HAM was introduced. It is needless to say that Armstrong was most famous to introduce FM radio. He was the first man who invented the regenerative electronic circuit from Columbia in 1913.
This electronic circuit is the heart of modern ham radio. There is another story of HAM which originates from Albert Hyman, a famous ham operator had to stand before congress to oppose a bill against ham radio and he defeated the bill.
Three letters from his name were taken and accordingly the name HAM came. Among three basic types mobile radio for vehicles plays an important role to avoid accident and dual band mobile radio are most popular.
How Ham Radio Works?
The radio operators transmit information from one place to another with the help of radio bands. Radio bands are nothing but a series of frequency across the radio spectrum. In ancient time there was transistor radio which is made with transistor tiny electronic parts.
This radio uses AM band or amplitude modulation band which ranges frequency 535-1605 khz. People would tune within this band a specific frequency to hear the transmissions. There as many as 26 bands allocated for ham operators from 18 MHZ to 275 GHZ. The basic operational principle are same for all radios that include portable ham radio, mobile ham radio and base radio.
The ham operator can communicate locally and internationally across the globe and even can communicate astronaut working in outer space. The amateur bands and frequency were allocated by the FCC, federal communication commission. It is to be noted that ham operators must be licensed in order to transmit information over the amateur bands.
The use of ham radio is beyond the emergency needs may be ISS international space station. When an astronaut travelling in space he generally carries a handheld ham radio with 4/5 watts output power. So when the astronaut standing in the window of his carrier he can see the other antenna on earth being same line of sight he can easily communicate with the ground operator.
With this simple technology he can easily chat with the ground man while flying up and up. It is very fantastic to know that apart from these 2 situations of emergency and space activity you can use these ham radios in the following circumstances. Moon bouncing is an important aspect and you know that moon is a poor reflector as its surface is flattens.
As such we need sophisticated equipment in order to bounce the radio waves coming to moon. This can be easily accomplished by the ham operators and this ham is the best of all. Distance dialing by the operators is a type of contest as because every time they try to connect their hams and a completion grower among the operators.
You should keep in mind that the ham radio is not only for voice transmission but also it can transmit digital data in the shape of image or pictures locally and around the world without the help of internet. The use of ham radio is beyond our imagination and its use will be limitless in the days to come. The radio spectrum is a vast frequency range from 3 khz to 300 ghz.