Short-range radio devices (SRDs) are low powered transmitters which provide either unidirectional or bidirectional communication and have low capability of causing interference to other radio equipment.
SRDs are widely used in for example, data collection with auto identification systems or item management in supermarkets, baby monitors, garage door openers, wireless home data telemetry and/or security systems, keyless automobile entry systems etc. etc.
SRDs operate in wide frequencies ranges. They share these frequencies with other radio applications and are prohibited from causing harmful interference to or claiming protection from those radio applications. If an SRD does cause interference to authorized radiocommunications service, even if the device complies with all of the technical standards and equipment authorization, that’s particular SRD MUST cease to operate, at least until the interference problem is solved.
SRDs are in summary permitted to operate on a secondary basis i.e non-interference and non-protected basis.
The following categories are amongst those devices as SRDs but due to the wide use of these devices, the list might not be comprehensive and will not limit to the list.
Telecommand: The use of radio frequency for the transmission of signals to initiate, modify or terminate functions of equipment at a distance e.g TV remote
Telemetry: The use of radiocommunication for indicating or recording data at a distance. E.g measuring the dam water level.
Voice and video: These are voice cover applications like walkie-talkie, baby monitoring , Citizen band (CB) and private mobile radio (PMR 446) .With video applications, non-professional cordless cameras are meant mainly used for controlling or monitoring purposes.
Equipment for detecting avalanche victims: Avalanche beacons are radio location systems used for searching for and/or finding avalanche victims, for the purpose of direct rescue.
Broadband radio local area networks: Broadband radio local area networks (RLANs) are a replacement of physical cables for the connection of data networks within a building, thus providing a more flexible and, possibly, a more economic approach to the installation, reconfiguration and use of such networks within the business and industrial environments.
Road transport and traffic telematics : Road transport and traffic telematics (RTTT) systems are defined as systems providing data communication between two or more road vehicles and between road vehicles and the road infrastructure for various information-based travel and transport applications, including automatic toll-collection, route and parking guidance, collision avoidance and similar applications.
Equipment for detecting movement and equipment for alert: Equipment for detecting movement and equipment for alert are low power radar systems for radiodetermination purposes. Radiodetermination means the determination of the position, velocity and/or other characteristics of an object, or the obtaining of information relating to these parameters, by means of the propagation properties of radio waves.
Alarms: The use of radiocommunication for indicating an alarm condition at a distant location.
Model control: which is solely for the purpose of controlling the movement of the model (toy), in the air, on land or over or under the water surface.
Inductive applications: Inductive applications include for example car immobilizers, car access systems or car detectors, animal identification, alarm systems, item management and logistic systems, cable detection, waste management, personal identification, wireless voice links, access control, proximity sensors, anti theft systems including RF anti-theft induction systems, data transfer to handheld devices, automatic article identification, wireless control systems and automatic road tolling.
Radio microphones: Radio microphones (also referred to as wireless microphones or cordless microphones) are small, low power (50 mW or less) unidirectional transmitters.
RF identification systems: The object of any RF identification (RFID) system is to carry data in suitable transponders, generally known as tags, and to retrieve data, by hand- or machine-readable means, at a suitable time and place to satisfy particular application needs.
Ultra low power active medical implant: The ultra-low power active medical implant (ULP-AMIs) are part of a medical implant communication systems (MICS) for use with implanted medical devices, like pacemakers, implantable defibrillators, nerve stimulators, and other types of implanted devices. The MICS uses transceiver modules for radiofrequency communication between external devices referred to as a programmer/controller and a medical implant placed within a human or animal body.
Wireless audio applications: Applications for wireless audio systems include the following: cordless loudspeakers, cordless headphones, cordless headphones for portable use, i.e., portable compact disc players, cassette decks or radio receivers carried on a person, cordless headphones for use in a vehicle, for example for use with a radio or mobile telephone, etc., in-ear monitoring, for use in concerts or other stage productions.
RF (radar) level gauges: RF level gauges have been used in many industries for many years to measure the amount of various materials, primarily stored in an enclosed container or tank. The industries in which they are used are mostly concerned with process control. These SRDs are used in facilities such as refineries, chemical plants, pharmaceutical plants, pulp and paper mills, food and beverage plants, and power plants among others.
Below is a table indicating the frequency bands in which SRDs are allowed to operate and the maximum allowed power limits and the following conditions shall apply;
I. The usage of short range devices is allowed on a secondary basis.
II. Short range distributors require to be registered with the Authority under the type approval guidelines and they shall be issued with a class license.
III. Any SRD causing interference on a primary radio communication service shall cease to operate even if it complies with the set technical and operation parameters.
IV. Any wireless equipment which is not within the identified frequency ranges or radiated power exceeds the maximum radiated power criteria identified in these regulations will be treated as any radiocommunication service and necessary Spectrum regulations identified shall apply.
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