Welcome to the wonderful world of shortwave listening (SWL). Test your aural comprehension of foreign languages, listening to news from abroad, or the various views and interests of ordinary people around the world, political IQ test to assess the country through the eyes of an outsider, will cast a distinctive eyes of domestic and geopolitical situations: it is always interesting, to hear the news of your country from the foreign experts abroad. Pay attention to the historical and cultural events occurring in remote places, 24 hours a day without leaving a comfortable bed, English and indigenous languages.
Nothing expensive, about short-wave radios. In the autumn of 2009 I bought a paperback novel-sized Coby AM / FM / SW radio is only $ 16, in the heart of the city several years ago, I bought at $ 8 and $ 10. Immortal and still elegant and Grundig World Band radios, available in many styles, sizes, functions and price ranges, some costing no more than $ 16. Grundig makes it the best: they are the choice for a travel agency or the living room. Coby products give a surprisingly good performance at very low prices, I would prefer to make a miniature Coby AM / FM portfolio, when I'm on the road and under pressure. I do not mind, causing harm or losses, since they cost so little place.
Listen to the direct broadcast Cuba, Germany, Canada, Japan, Spain. Listen to the German band plays in Vienna, Mozart or Beethoven live!
There is a lot of excitement scanning radio to catch up with the diversity of ideas, themes and interests described in broadcasts. When a good buy even the cheapest model in broadcasting take the place of weak signals in the farthest in the world (this effort, as the pastime of so-called 'DXing'). Students can receive high-frequency 2-way communication between amateur radio operators in the Morse and oral forms.
Technically the best reception at night, when the idea of broadcast waves through the night sky over the mountains and the sea, adds elements of drama in the SWL and the convenience of the community radio. SWL in the night, like the mysterious hollow echo-quality broadcasts. It's like coming into a tunnel. Perhaps this effect is created because of the long and bumpy journey no empty space, wave packets transferred in stages to arrive at the receiver slightly phase, which means that you hear a sound coming from two different places at once, so the echo effect.
A good electronics store or A Radio Shack will sell you a short-wave Radio antenna This is a six-Ten Foot long in some areas to deal with plastic wire, a small, flat-wound spool. Hang with the spindle, or the window, attach the free end of the wire to the radio with telescopic antenna and tune to the radiation. Only a few dollars to optimize the reception antenna SWR, without selling less, even at night. The distinction is amazing. You can get your own simple wire antenna 'wire extracted from the rest of headphones: Hold one end of a long thread wire through the window of the tack, and, about an inch of copper area at the other end. They wrap around the tip of the telescopic radio antenna. Sometimes I wrap some thick rubber band around portable radios to help them insulate electric shock or breakage if should fall.
Hear it from the effects of the ionosphere, the Commission received, a vast layer of Earth's atmosphere to reach about 50 km (30 miles) of Earth's surface, about 500-800 km (400-600 miles), depending on the amount of sunlight. This is close to the sub-layers, that depends on short-wave propagation.
Ponder the fact that the radio is a form of electromagnetic radiation, like light, so the distance of three hundred million meters per second (186,000 miles per second). Sound waves travel at different speeds through different medium: water, steel, air, wood. The denser the material, the faster it moved. But the radio waves, not sound waves.
Create a simplified, but very useful picture of the imagined short sine waves (S-shaped), undulating waves of energy in the space up to about 10 meters (10 feet or 30 meters), about 100 meters (100 feet or 300 feet). This is quite long, actually, but it may be useful in the radio waves transmitted to a relatively high energy of a high frequency, the energy and the wavelength is inversely proportional to each other. Communication flows with very low frequencies, such as that used in the sea or navigation purposes incredibly long, and the distance of 1000 m (1 km or three-fifths of a mile) to 10,000 meters (about 10 km or 5 miles).
I hope you like this study, reading and relaxing hobby reasonable, listening on shortwave. It would encourage me to write in the future is a subject of shortwave radio, for example, the physical characteristics of radio waves (the length and energy, or frequency), the simple structure of the atmosphere return waves SWR, and the two issues before SWL (the fading and interference), the use of shortwave radio (military communications, 2-way communication of voice or Morse code as a hobby, and in case of emergency, private broadcasting, etc.), as radio waves (made up of visible light TV and microwave as well), and why use it in the electromagnetic spectrum. These are the five core subjects, or if the shortwave radio.
Recent Comments