Radio communication blog
Tetra (The Terrestrial Trunked Radio) is considered as a professional mobile radio standart (PRM), provided in more than 100 countries. It is widely used by the governmental organizations and likewise by private companies in various spheres which differ from transport to the companies-suppliers of energy. Radio of such a type is to correspond with established requirements, which include unlimited availability of the system, secure guarantees, stable wireless connection.
An integrated test set can be determined as the inalienable part of mobile radio measurements and it is a vital task to determine how these measurements are to be performed. RH (Radio-frequency) system is to work properly in various environmental conditions, which can occur during field usage. An appropriate test method must be used in order to provide an opportunity to carry out fast and accurate control of radio system.
With the development of technologies and the extension of the requirements for communication equipment, the traditional means, as analogue service, are not able to comply with up-to-date standards. Hence, more sophisticated services are to be developed. These changes lead to the redefinition of PMR, which is based on digital technology.
The vital task in order to provide a proper performance of RF frequency is to test and verify alignment data. A degraded digital modulation can be caused by the incorrect alignment. Such an alignment can be figured as an encumbrance for the ability of the receiver to recover the digital data.
LMR, or Land Mobile System, is a terrestrially-based professional push to talk communications system, which is widely used by public safety organizations (for instance, police, firefighters and others) with the aim of supporting the communication in critical situations. This system is wireless, it works without any cables. LMR systems are used worldwide in various spheres from industrial to security and even military.