Shortwave radios have many different make and models and are very different in terms of cost, features, size, complexity, and other factors. There is no single "better" shortwave radio for everyone. The best shortwave radio is primarily your listening interest.
However, there are features and specifications that must be sought on any shortwave radio that is being considered. These are:
* Frequency coverage. Shortwave frequencies are generally considered to be the upper band of the AM band of 1700 kHz and up to 30 MHz. The minimum frequency range should be searched between 540 kHz and 30 MHz. Most shortwave radio tunes to 150kHz today, covering the long waveband.
* Frequency Reading. Most of today's shortwave radio shows a digital display that shows the frequency of radio tuning. Some radio, generally cheaper models have analogue "slide rule" frequency readings that do not indicate the exact frequency of the radio. It may be very difficult and frustrating for a station to search for a digital frequency without a digital display, so the digital frequency display must be "compulsory" for any shortwave radio that is being considered. However, the analogue reader shortwave radio can make a good, cheap "backup" radio for travel, etc.
* Modes. Some shortwave radio only configures AM modes that may be satisfactory for listening to most shortwave broadcast stations. However, SSB is used by some radiating stations in addition to ham, aviation, military and maritime transport. The shortwave radio, which also accepts SSB next to AM, widens listening options for a short time.
* Selection preferences. Selectivity is discussed in more detail below, but consideration should be given to how many selective bandwidth can be selected. Some portable receivers allow the choice between "wide" and "narrow" selective bandwidths, while some desktop shortwave radio has five selectivity bandwidths. The narrower selectivity bandwidths allow to reduce the interference between the stations in the supplementary posts, although the sound quality of the desired station decreases because the selectivity is narrowed.
* Antenna Connections. Some portable radios come with a built-in telescopic antenna, but no external antennas. Other portable shortwave radios have a connector that allows you to connect an external antenna. Most desktop shortwave radio has connectors for external antennas. These are typically connectors of antennas with a 50 ohm coaxial cable and other antennas using a conventional insulated "connecting" wire. External antennas generally provide better reception than built-in antennas, although built-in antennas generally satisfy the listening of large international broadcasting stations. However, built-in antennas give poor results in buildings built in steel frames, such as a multi-storey condominium or condominium. In such cases, the possibility of connecting an external antenna (just a few meters away from the window) can significantly improve reception.
Before you select the radio, you must set priorities for the required functions. For example, if you or someone you buy a radio is old, then it is worth a radio with nice, easy-to-use control buttons. While a businessman who travels the world and lives in a suitcase wants a compact, light short-wave radio.
With a variety of make and model of shortwave radio one can be difficult if you do not understand technical jargon. Shortwave radios differ greatly in costs, features, size and complexity. There is no single shortwave radio for everyone, and different people have different interest in the student.
Some factors need to know before "AM FM Shortwave Radio"
Prices vary according to your needs. Want a lot of features, broad coverage or a strong buyer. Do you need portability? The size of the radio also affects the price.
"AM FM Shortwave Radio" & # 39; how portable. You want a short-wave radio that you can easily store, maybe one you can take with a campsite or other outdoor pursuit. Portable AM FM radios are comfortable, but do not have the power you can get from a desktop shortwave radio station. The tabletop model is usually much heavier and larger, so it is not comfortable to carry your backpack.
Consider the shortwave frequency range. While the am fm shortwave radio varies within their scope, the short wave frequency is almost always between 2300 and 26,100 kHz.
It's a good rule to follow this minimality: AM FM radio radio from 5730 to 21 850 kHz. If you are a CB Ham operator, SSB (Single Side Band) can be your choice, which is part of many SW tuners. The digital tuner is also an option when tuning accuracy is required. Digital tuners are much more accurate than manual dials.
Built-in antennas for portable and pocket shortwave radios are capable of capturing key international broadcasters but are less effective than worse signals. Another weakness is when they try to use them in the steel frame building. The external antenna connectors give you a better reception with a desktop shortwave radio. However, it is possible to buy a portable am fm shortwave radio with an external socket and a built-in antenna.
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