Product overview
The JND ST-28-BK61GFC from Shenzhen JND Technology Co., Ltd is a single-frequency GNSS receiver module for integration into navigation equipment. Its architecture combines a BK1661 chipset with a built-in antenna, temperature-compensated crystal oscillator, low-noise amplifier and filter. This compact, very low-power assembly brings the antenna and receiver together within one module. Tracking sensitivity reaches -165 dBm, supporting positioning in weak-signal settings such as urban canyons and forested areas, alongside fast cold starts under low-signal conditions.
For host integration, the receiver outputs position, velocity and time data through a serial port and supports NMEA-0183, custom and UBLOX protocols. An integrated QMC5883P three-axis geomagnetic sensor communicates over I2C and provides selectable measurement ranges with temperature compensation. Together, these functions support electronic compass applications and UAV heading and attitude navigation. The configuration is a navigation module, with both GNSS reception and magnetic sensing incorporated into the assembly. Offline and online assisted positioning services are also supported.
