Radio Microphone

The main technical tool for listening to for many years remained an ordinary beetle, radio microphone. Only change its size, with the main feature of each particular model is a bug way of disguise. The main trend of recent years - all the miniaturization of semiconductor technology. The most widely to obtain information about the content of conversations using the following tools. Telephone 'Bugs' These bugs are designed to transmit the conversation taking place in a closed room while on-hook via a telephone line.

Listen to manage the ongoing phone calls and conversations you have the room for on-hook. Methods, focused on the latter, are hearing a chime circuit vnutrikomnatnoe audition with high pump insertion 'bug', activated by a code remote phone, integration into the machine 'bug', temporarily blocking lever tube during its descent after answering a phone call. Phones with external activation here is not even monitored phone touching hands. Information removed from the phone line when laying pipe through an external high-frequency oscillations activate its microphone and sometimes through the interception of micro appearing in the electromagnetic call from lightest shake its moving parts. I should say that in a similar way you can capture useful mikroelektrotoki not just a phone, but also housing a call. Radiozhuchki This bug is the frame device for the hidden information.

This microtransmitter VHF, which can be fixed may be temporary. Fixed bugs feed on the model of the electrical network. The most common their place of installation - light fixtures, televisions, power outlets, chandeliers, and other standard elements of the situation. All temporary devices are laid during a secret visit to the facility or legal (visitors, cleaners ...) Places Installation bug - where they will be difficult to detect (for books, including jewelry, upholstery ...) Often, bugs disguised as pens, matchboxes, gadgets, and other subtle little things. The main drawback most of these designs is that the bugs have a limited (destyaki - hundreds of hours) during battery life, for example, depends on the radiated power in space, used electric capacity batteries. Themselves conversations are intercepted at a distance of 5 to 30 meters, whereas the radius of transmission range from tens to hundreds of meters, and is used to increase the range of intermediate repeaters, and 'bugs' at times set to metallic objects - water pipes, radiators, appliances (they serve as an additional transmitting antenna). Brand radiozakladki work on a variety of frequencies (10-1000 MHz), but to import samples of the most characteristic bands 20-25 MHz, 130-174 MHz, 400 - 512 MHz. Increasing the operating frequency increases the range of from concrete buildings, but this requires special receivers or transform boxes (converters) to the domestic FM receivers. Podstrahovyvayas from accidental discovery, professionals sometimes involve such tricks as an unusual stretch of the spectrum of the transmitted signal, dual modulation carrier frequency, a decrease of initial power using an intermediate relay, and other similar techniques.