GPS bug device



    I don’t know how in Russia, but in the USA, citizens periodically find tracking GPS devices installed by special services under the car’s bottom. The last time, when the press became aware of this, a student of Arab descent, through inexperience, took the device to the “manufacturer" , without having time to thoroughly examine it. A similar device in her car several years ago was found by animal rights activist Katie Thomas. She refused to return it to the FBI, and now dared to give the device for study .

    The device consists of a GPS receiver, a radio transmitter and a set of four lithium-thionyl chloride batteries (Li-SOCl 2D-format with a capacity of 13 Ah each - this is enough for a long time, self-discharge in the idle mode of such batteries is only 1% per year, and the willingness to work is 10-20 years). In China, each battery costs $ 25, plus shipping, so this is the most expensive part of the bug. A small antenna is used to transmit radio signals. Before disassembling the transmitter-receiver module, both antennas are disconnected. The second wire leads to the SIgem GPS receiver . The main part is the transmission module. As you can see, it is in a universal case, which allows the use of other batteries, of various sizes and shapes. The back cover is designed for this. Therefore, it was necessary to drill on the other hand.



























    Inside are two modules for receiving GPS and radio broadcasts. A small blue wire connects the GPS antenna to the module. By disconnecting the antenna, you can examine in detail each chip. It turns out that GPS processing is carried out by the archaic µ-blox GPS-MS1 module . Date of production - June 29, 1999! It has 128 KB of SRAM and 1 MB of flash memory. On the back side there is a backup power supply for the clock and SRAM, which is often used in such microcircuits for faster signal processing from satellites and to save charge in the main cell. A crooked soldering of elements shows that FBI employees do them manually. The second module contains the following elements: XEMICS XE1201 transceiver













    for receiving and transmitting data and a filter on surface acoustic waves RF1172 for isolating a signal at a frequency of 433.92 MHz. Video: www.wired.com/threatlevel/2011/05/gps-video









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