If you want to receive music or news from different parts of the world, you can do a so-called world receiver use. This particular radiois a receiver of shortwave radio transmitters, because only shortwaves that are broadcast by a transmitter, go completely around the globe, Thus, shortwave transmitters can be received worldwide. However, most of them are world receiver also able to receive other frequency ranges and also the usual FM broadcasting. This technique was first used in 1939 by Eugene F. McDonald, who then ran a radio station. Until then, only broadcasting via Am-Rundfunk was possible on the radio, sending either short, medium or long wave.

Listen to music from anywhere in the world
The world receiver Nowadays, these are practical radios with wide-ranging reception in good quality, which are available in various forms. There are some models the size of a pack of cigarettes that can be taken everywhere. Other models are stand models and some are even offered in a nostalgic look. For someone who wants to get more involved, there are also powerful station receivers available. Unlike a normal radio, are world receiver designed so that, for example, they can easily receive radio stations from Japan, Russia or Argentina. In addition to a high input sensitivity, this also requires a pronounced selectivity in order to be able to separate the individual transmitters exactly from one another. Otherwise the radio stations would interfere with each other due to the large number of stations, which would make a clear reception impossible. Who a small, mobile world receiver If you are using it on the move, you can upgrade it with a powerful additional antenna, for example, so that the reception width and quality of the signal increases.

Special features of a world receiver
When buying a world receiver, the interested party should make sure that the world receiver has, inter alia, a switchable synchronous detector. This serves to amplify the weakest signals so that the transmitter can still be received. Similarly useful is an adjustable receive sensitivity, which also makes it possible to more easily receive various transmitters. This purpose is also fulfilled by a preselection, which results from tuning the antenna preamplifier. With these small tools, the listener can also receive weak or even disturbed stations easier. The quality of a world receiver ranges from very simple devices with little adjustment options to elaborately designed devices that combine a lot of features for a better reception. The better models usually work as a two-stage superposition receiver, which is also referred to as a double super. Even better are the costly models, which have three super-works, so have three different intermediate frequencies. However, four-stage devices can only be found in professional applications. In contrast, many analog and older receivers are usually only a single super receiver, which has only one intermediate frequency or mixer. They are far less powerful than the double super receivers. In addition, they are much more susceptible to image rejection.

Correct use of high-quality world receivers
Modern world receivers nowadays display the reception frequency on a digital display, whereby the desired frequency can also be entered directly via digit keys. The analogue world receivers from the good old days had an indicator in a standardized scale that provided more or less correct values. While ordinary radios use a simpler technique, world receivers operate with spread bands that are always complete. Include scale plans, so that even transmitters can be separated from each other, the reception frequencies are very close together. This is usually a Freuquenz fine tuning available. For medium to good quality world receivers, buyers may also use certain types of modulation, such as single-sideband modulation, which is referred to as SSB, or single-side band, in English. As a result, users can also use their world receiver to receive the amateur radio service on shortwave messages. However, world receivers are recommended by most as a practical radio station because it is easy to stow away. There are world receivers in different price ranges and in various equipment lines, whereby the lower price range costs only a few euros, the expensive world receiver often think several hundred euros. The buyer must decide for himself whether he gives preference to quality.