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A short-range device (SRD), described by ECC Recommendation 70-03, is a radio-frequency transmitter device used in telecommunication that has little capability of causing harmful interference to other radio equipment.
Facebook users can geotag photos that can be added to the page of the location they are tagging. Users may also use a feature that allows them to find nearby Facebook friends by generating a list of people according to the location tracker in their mobile devices. [2] Instagram uses a map feature that allows users to geotag photos. The map ...
P-18 Modernize version with new antennas, bigger range, digitalised. P-40 Medium-range surveillance and target acquisition; AN/TPS-70 long range 3D radar. Giraffe radar modernize version, and digital with PASARS anti-aircraft system. H-22 Long-range surveillance and target acquisition. Marconi S-605/654 Medium-range surveillance; Marconi S-613 ...
According to a recently published (June 2021) resolution of the Spanish government, [10] where it defines 'interface IR-266', non-specific mobile short-range devices may be used without authorization for voice applications with 'advanced mitigation techniques' (such as listening before talking [11]) from 434.040 to 434.790 MHz, with channels narrower than 25 kHz and with a maximum 'apparent ...
Short Range Devices may also use frequencies available for unlicensed such as 315 MHz and 868 MHz. RF modules may comply with a defined protocol for RF communications such as Zigbee , Bluetooth Low Energy , or Wi-Fi , or they may implement a proprietary protocol .
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Examples of a US-made set, the CDS-501, were captured in Cuba and are thought to have seen use in Central and Eastern Europe.The device operated in the upper part of the VHF band and sent high speed bursts of encrypted data from an agent to a receiving station located within a Western diplomatic facility in a hostile country to avoid interception by the adversary signals intelligence service.
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