ST171 ST171 is designed to detect: Cellular jammers GPS/GLONASS satellite navigation receiver jammers Ultrasonic and electromagnetic jammers of sound recording devices, voice recorders, etc.
Additional features: Detection log maintenance Creating a photo of the surrounding environment at the moment of detection Recording the location at the moment of detection. Displaying the spectrogram of signals from 900 and 1800 MHz cellular base stations, audio and ultrasonic frequencies ST171 has two detection channels: Radio frequency Sound The radio frequency channel is designed to detect:
Cellular jammers GPS/GLONASS receiver jammers Devices that interfere with sound recording using high-frequency radio emitters (electromagnetic jammers of voice recorders). The receiving part and primary processing of radio frequency channel signals are implemented in the ST171R receiving module.
Using the ST171R receiving module ensures:
Maximum detection range of blockers. The original algorithm ensures detection of the blocker at a distance several times exceeding its suppression zone. Short detection time (from 0.1 sec), which makes it possible to detect blockers in moving vehicles (up to 100 km/h).
The audio channel is designed to detect devices that interfere with sound recording using ultrasonic and acoustic emitters (ultrasonic and acoustic suppressors of voice recorders). This channel is implemented using the circuitry capabilities of the Android device itself.
Control and display of work results is carried out via an Android device - a smartphone or tablet using the "ST171JD" program. Data transfer between the smartphone and the PM occurs via a BLUETOOTH connection. The alarm signal is a vibration call and indication on the display.
The ST171JD program can be installed on an Android device from play.google.com or from the Play Market application.
No special knowledge is required when working with the product. It is enough to select the desired mode, and further ST171 setup will occur automatically.
Advanced settings are provided for trained users
ST171 has three modes: "Office", "Car" and "Manual".
The first two modes are automatically configured and do not require special knowledge when working. The "Manual" mode is intended for trained users and allows for "fine" adjustment of the product.