Questions and Answers part 2
TECHNICAL questions
What is the principle of operation of the wired non linear junction detector in ST-301”SPIDER”?
The principle of operation of a wired non linear junction detector is based upon sending a signal 1KHz in the wire and receiving re-reflections. RED is semiconductors, BLUE reflection for M.O.M. (Metal on Metal connections, etc.).
Types of microphones and their detection methods?
Currently there are two main types of microphones widely used in eavesdropping devices. And they are:
-Electret microphones
-Dynamic microphones
Electret microphones require voltage to operate and send information via cable.
Dynamic microphones on the other had does not require power supply, it generates it, itself.
Therefore, when checking wirelines it is necessary to apply Bias voltage to the line to make sure there are no electret microphones attached to it. On the other hand, for detection of dynamic microphones it is just necessary to increase the sensitivity of the wired receiver.
Recommendations when operating Wireline analyzer and non linear junction detector. Upon discovery of the unmasked microphone connected to the wireline. One operator checks the wire with non linear junction detector another is listening on the other end with the wire line analyzer.
As soon as he hears a distinctive sound, he raises his hand and the other phase of search starts.
What is the range of an Ultrasonic jammer?
Ultrasonic jammers operate on the principle of ultrasonic noise emission inaudible to human hearing. Emitted ultrasonic noise affects the microphone and the microphone starts vibrating and creating noise in the recording. Please note that ultrasonic noise wavelength is very narrow, therefore it does not penetrate an obstacle (clothes, reflective surfaces, etc.). For a qualitative operation of ultrasonic jammer it is recommended to prepare the protection zone, equip it with devices and test the jamming at site. Windows as reflective surface increase the quality of jamming. To increase the quality of jamming, two or more devices can be used. In addition, additional devices Such as acoustic safes, and acoustic noise emitter can be used to conceal the voice.
What types of cables can you check with ST-301”SPIDER” ?
Almost all wire line lines, can be checked with ST-301”SPIDER”, including coaxial cables and 9 pin cables.
Low current lines can be checked in wired receiver mode, low frequency amplifier mode, as well as reflectometer mode and wired non linear junction detector mode.
For checking 9 pin cables device does not require additional accessories. All required accessories for that procedure are in the delivery set of the device. Including accessories for checking coaxial cables and telephone lines.
FINANCIAL questions
What is the purchase procedure of Your offered equipment?
For new customers:
1. Please fill out our new customer form and send it back to us.
2. Specify device or devices and quantity.
3. Afterwards we issue You our official offer with prices, delivery terms and delivery price.
4. As a form of payment we accept bank transfers only.
5. After receiving bank confirmation, the preparation of the order starts.
6. After device or devise is ready for shipping, we send it out via UPS courier services and inform You of the tracking number of the order.
For existing clients:
1. Specify devices or devices and quantities.
2. Afterwards we issue You our official offer with prices, delivery terms and delivery price.
3. As a form of payment we accept bank transfers only.
4. After receiving bank confirmation, the preparation of the order starts.
5. After device or devise is ready for shipping, we send it out via UPS courier services and inform You of the tracking number of the order.
OTHER questions
What is the warranty period of Your offered equipment?
Upon additional agreement, warranty terms are negotiated separately and can be increased to 24 months or even 36 months. Afterwards only post-warranty repairs. Upon sending us the device or devices for repairs, please specify when and where it was purchased, describe in more detail, what is the malfunction of the device, etc.
Please note that Selcom Security JSC is a technical center providing, warranty obligations, technical support and post-warranty repairs.
What devices other devise besides NLJD and Multifunctional detectors, can be used for detecting of eavesdropping devices?
Electromagnetic antennas such as SEL 700 are designed for detection of active electronic devices.
Hidden cameras detectors such as OPTIC-2, designed for detection of hidden cameras.
SEL-900 STALKER Thermal detection kit designed for detection of various electronic devices according to heat signature.
SEL IRCAM supplementary pole camera for checking hard to reach places with poor lighting.
What is the principle of operation of the wired non linear junction detector in ST-301”SPIDER”?
The principle of operation of a wired non linear junction detector is based upon sending a signal 1KHz in the wire and receiving re-reflections. RED is semiconductors, BLUE reflection for M.O.M. (Metal on Metal connections, etc.).
Types of microphones and their detection methods?
Currently there are two main types of microphones widely used in eavesdropping devices. And they are:
-Electret microphones
-Dynamic microphones
Electret microphones require voltage to operate and send information via cable.
Dynamic microphones on the other had does not require power supply, it generates it, itself.
Therefore, when checking wirelines it is necessary to apply Bias voltage to the line to make sure there are no electret microphones attached to it. On the other hand, for detection of dynamic microphones it is just necessary to increase the sensitivity of the wired receiver.
Recommendations when operating Wireline analyzer and non linear junction detector. Upon discovery of the unmasked microphone connected to the wireline. One operator checks the wire with non linear junction detector another is listening on the other end with the wire line analyzer.
As soon as he hears a distinctive sound, he raises his hand and the other phase of search starts.
What is the range of an Ultrasonic jammer?
Ultrasonic jammers operate on the principle of ultrasonic noise emission inaudible to human hearing. Emitted ultrasonic noise affects the microphone and the microphone starts vibrating and creating noise in the recording. Please note that ultrasonic noise wavelength is very narrow, therefore it does not penetrate an obstacle (clothes, reflective surfaces, etc.). For a qualitative operation of ultrasonic jammer it is recommended to prepare the protection zone, equip it with devices and test the jamming at site. Windows as reflective surface increase the quality of jamming. To increase the quality of jamming, two or more devices can be used. In addition, additional devices Such as acoustic safes, and acoustic noise emitter can be used to conceal the voice.
What types of cables can you check with ST-301”SPIDER” ?
Almost all wire line lines, can be checked with ST-301”SPIDER”, including coaxial cables and 9 pin cables.
Low current lines can be checked in wired receiver mode, low frequency amplifier mode, as well as reflectometer mode and wired non linear junction detector mode.
For checking 9 pin cables device does not require additional accessories. All required accessories for that procedure are in the delivery set of the device. Including accessories for checking coaxial cables and telephone lines.
FINANCIAL questions
What is the purchase procedure of Your offered equipment?
For new customers:
1. Please fill out our new customer form and send it back to us.
2. Specify device or devices and quantity.
3. Afterwards we issue You our official offer with prices, delivery terms and delivery price.
4. As a form of payment we accept bank transfers only.
5. After receiving bank confirmation, the preparation of the order starts.
6. After device or devise is ready for shipping, we send it out via UPS courier services and inform You of the tracking number of the order.
For existing clients:
1. Specify devices or devices and quantities.
2. Afterwards we issue You our official offer with prices, delivery terms and delivery price.
3. As a form of payment we accept bank transfers only.
4. After receiving bank confirmation, the preparation of the order starts.
5. After device or devise is ready for shipping, we send it out via UPS courier services and inform You of the tracking number of the order.
OTHER questions
What is the warranty period of Your offered equipment?
Upon additional agreement, warranty terms are negotiated separately and can be increased to 24 months or even 36 months. Afterwards only post-warranty repairs. Upon sending us the device or devices for repairs, please specify when and where it was purchased, describe in more detail, what is the malfunction of the device, etc.
Please note that Selcom Security JSC is a technical center providing, warranty obligations, technical support and post-warranty repairs.
What devices other devise besides NLJD and Multifunctional detectors, can be used for detecting of eavesdropping devices?
Electromagnetic antennas such as SEL 700 are designed for detection of active electronic devices.
Hidden cameras detectors such as OPTIC-2, designed for detection of hidden cameras.
SEL-900 STALKER Thermal detection kit designed for detection of various electronic devices according to heat signature.
SEL IRCAM supplementary pole camera for checking hard to reach places with poor lighting.
