Modern security systems regularly expand the range of components. Just a few years ago, new-generation multifunctional alarm packages became available for ordinary users both in price and in operation capabilities. Today, the private homeowner also includes means of detecting covert tracking systems. Depending on the model, the device for searching for bugs and hidden cameras is used both in commercial structures and in residential premises, and even in the provision of transport equipment.
Detector Overview
Externally, such devices resemble mobile digital devices. As a rule, this is a small block with a plastic case and electrical filling. Depending on the principle of operation, radio equipment for various purposes can be used. The most common scanning models are digital panels that cover specific radio frequencies. The user can configure the device for specific parameters in accordance with the conditions of use. A compact bug detector, which itself involves a hidden installation, is also common. Typically, such equipment acts as a latch of signals coming from bookmark bugs. In case of detection of suspicious activity, they send their own signal to the main control panel. Most often, communication between the devices for fixing unwanted signals and the main security complex is provided via wireless channels, for example, via GSM networks, via Wi-Fi, CDMA, etc.
The principle of operation of the device
Most devices that detect hidden cameras and bugs work on the principle of creating an indicator field. A scan zone is formed in which the equipment can detect changes in the frequency range. By fixing the fact that the background radiation changes, an external source of signal propagation is determined. How effective the search for hidden cameras and bugs will depend on the technical parameters of the scanning device. One of the key characteristics is sensitivity. In particular, the range of signal reception and the frequency spectrum at which the detection of a bug will be possible in principle depend on it.
Varieties
As already mentioned, there are scanning devices in the form of mobile equipment, as well as compact tools designed for hidden installation. In the first case, the devices can be stationary and manual. The first are installed on an ongoing basis in a particular place and continuously monitor activity in the target zone. Manual devices are designed for one-time scanning sessions, that is, not in a constant mode. Such devices are advantageous to use for monitoring specific areas in the house or on the premises.
If it is planned to detect mini-bugs by secret scanning, then the same compact detectors are used for flush mounting. They do not have a digital control panel and are used only for transmitting a signal to a central security console. You can also classify devices by type of connection. The already mentioned wireless communication method is optimal from the point of view of the possibility of performing the same flush mounting, however, in this case, the problem of autonomous power supply remains. Such models can not do without their own batteries in the form of rechargeable batteries or batteries, which will need to be periodically replaced.
Scanning stationary devices, as a rule, are introduced into the security infrastructure through a wired network, which provides both the possibility of reliable signal transmission and power from the local power supply line.
Features of detectors for cars
The task of detecting bugs and listening devices in cars is made difficult by the fact that the on-board power supply is powered and interferes with signal interception. Typically, hand-held devices are used to scan vehicles and purposefully check for potentially hazardous areas. In particular, experts recommend examining door panels, ceiling upholstery, chairs and head restraints. But the possibility of the effective use of standard devices is not excluded. For example, some recorder models support the function of recording sound in the cabin and receive GPS data, which can also be used as a means of detecting suspicious manipulations.
Outdoor devices for searching bugs and hidden cameras in cars are represented by direction finders with a magnetic installation. Depending on the nature of the use of the car, such equipment is used in one-time scanning sessions with one or another regularity. The bottom, attachment points of mirrors, optics and other functional components are checked. Integrated scanning is performed using broadband bug detectors.
Telephony Protection Tools
To get started, turn off the call forwarding and third-party calls on your phone. This is a basic measure of preventing third-party listening. The next step will be to provide protection at the software level. This toolkit is a software that allows you to detect malicious applications, rootkits, trojans and all kinds of scripts. For example, systems like AIMSICD create a protective barrier against connecting to cellular stations without signal encryption. At the hardware level, a jammer or compact detector, which is also built into mobile equipment, will protect the phone from the built-in mini-bug. But since such devices can negatively affect the quality of cellular communication as such, it is better not to use them in a constant mode, but to connect only if there are signs of listening. The following symptoms may indicate an external intervention:
- Quickly discharge your phone’s battery.
- Long system boot with delays.
- Heating the device in standby mode.
- The presence of echo and extraneous noise during the conversation.
Basic operating parameters
The importance of a sensitivity indicator, which affects the quality of scanning, has already been emphasized. Modern models of detectors are capable of operating at a sensitivity level of about 50 mV / m. This value indicates that the device will be able to detect a bug with a power of 5 mW at a distance of 5 m. Cellular communications in this case will be detected within a radius of 50 m.
On the market you can also find devices for searching bugs and hidden cameras with a sensitivity of 100 mV / m. But with a higher probability, this figure will be overstated. Typically, such devices are used for professional purposes and do not focus on domestic use.
Another important characteristic is the dynamic range. It indicates the ability of the detector to capture low and high power signals within its scanning scale. On average, this figure reaches 40-45 dB. It is also worth considering the possibility of using the device in different temperature conditions. Standard models with protective housings are suitable for use in temperature ranges from -30 to 80 ° C.
Device Modes
One device can support several operating modes. The most common include security mode, scanning for the presence of a bug and acoustical blinds. The basic security mode assumes that the device will operate in the background at standard scanning frequencies. This option is suitable for continuous monitoring of the radio environment in the target area with low power consumption.
According to this principle, in particular, a silencer for bugs and hidden cameras works, fixing the increased activity of radio signals. The targeted search mode for unwanted equipment involves the use of sound and light indications. In this case, the user sets himself the optimal sensitivity for detecting bugs with approximately known power.
As for the acoustical mode, it is used to detect hidden microphones. The device creates an acoustic background, the operation of which will allow you to pick up noise from working analog audio tracking systems.
Additional functionality
The quality of the functional filling of detectors has recently been determined by the support of automatic tuning. This option allows you to program the device for optimal background noise processing without manual settings. That is, the device itself will adapt to the specific operating conditions depending on the current level of background noise. In this format of operation, the identifier of hidden cameras and bugs will be able to accurately scan the area regardless of the influence of acoustic signals and radio interference. Also, the additional functionality includes the ability to connect headphones and another headset.
Manufacturers
One of the most extensive assortments in the domestic market is owned by BUG HUNTER. Its lineup contains both professional and household devices that allow you to define wireless bugs, radio microphones, video cameras, jammers and jammers. As alternative proposals, it is worth considering the "Protection" and "Hunter" systems. In the first case, GSM transmitters, detectors with FM bands, keyloggers, etc. are offered. The Hunter company, in turn, produces devices for detecting hidden cameras and bugs with the ability to control frequency ranges depending on the level of electromagnetic background. This makes it possible to detect radio bugs with support for vibration alarm modes and acoustics.
Is it possible to make a detector with your own hands?
You can independently make a detector that can detect radio signals and light pulses from hidden surveillance cameras. The device is assembled using integrated circuits, light filters, LEDs, switches, a power source in the form of the same battery or accumulator, etc. For manufacturing, you will need a soldering iron and a metal box, which will contain the filling. Also, a home-made device for searching for bugs and hidden cameras should be provided with a powerful antenna. The sensitivity of the device and the quality of signal processing will depend on its characteristics. But it is important to consider that the stability of operation and the ability to withstand the interference of powerful bugs in such products is significantly lower compared to specialized equipment.
What to consider when choosing a bug detector?
If, nevertheless, a decision was made to purchase factory equipment, then several fundamental parameters will need to be taken into account in the selection. So, attention should be paid to the ranges of covered radio frequencies, the spectra of detecting radio waves, the ability to detect analog and digital bugs, operating modes, etc. But even if the scanner of bugs and hidden cameras meets the target search parameters, without well-thought-out notification channels, its function will be meaningless. Therefore, the purchase also takes into account the possibility of introducing the device into the local security system, pairing with an alarm system and additional means of communication, for example, sending a message directly to the user's phone.
Nuances of operating devices
Before using the device, a diagram of its placement and connection should be drawn up, as well as a configuration of interaction with other equipment should be thought out. Direct installation is carried out at a point covering the target tracking area. Installation is carried out mechanically by means of complete hardware. The connection method will depend on the data channel. In the matter of how to find hidden cameras and bugs, the correct hardware setup is important. In modern models, an automatic scanning mode with the aforementioned adjustment is also provided, but you can set the optimal parameters manually. The second setting option for the same sensitivity involves the initial orientation on bugs and cameras with characteristics and operating parameters in known ranges.
Conclusion
The organization of a security system against tracking and wiretapping is not cheap, so its installation and operation should be approached responsibly. In addition, today it is practiced checking the premises for wiretapping in the format of periodic scanning using professional detectors and jammers. If there are signs of tracking, for example, you can assess the situation at the facility without installing equipment in a one-time monitoring format. But if the task is constant and comprehensive scanning, then preference, of course, should be given to stationary devices that are combined with local security systems.