Tallysman Wireless Inc. has added two new models to its GNSS spiral antenna series.

There are also two new GNSS signal distributors.

HC976 Three-band helical antenna with L-band, embedded version. (Photo: Tallysman)

HC976 embedded helical antenna and HC976E embedded helical antenna are specially designed and manufactured for high-precision positioning. They are light and compact, suitable for a variety of applications:

Both models support GPS/QZSS-L1/L2/L6, GLONASS-G1/G2, Galileo-E1/E6 and Beidou-B1/B3 frequency bands.

Supported regional enhancement services include:

The main feature of HC976 and HC976E is to support QZSS-L6, Galileo-E6 and Beidou B3.

HC976 is 44 millimeters (mm) wide and 62 millimeters high, and weighs only 42 grams.

HC976 Three-band helical antenna with L-band, shell version. (Photo: Tallysman)

It has a precision-tuned spiral element, provides an excellent shaft ratio, and can operate without a ground plane, making it suitable for a variety of high-precision applications.

HC976 also has a low-current, low-noise amplifier (LNA) and pre-filter to prevent harmonic interference from high-amplitude signals, such as LTE in the 700 MHz band and other nearby in-band cellular signals.

All Tallysman's built-in helical antennas are encapsulated in a rugged military-grade plastic enclosure. The antenna base has an integrated SMA connector, a waterproof O-ring and three screw holes for safe connection.

Weighing only 12 grams, 39 mm wide and 50 mm high, the lightweight HC976E embedded antenna supports all the functions of HC976. To facilitate the installation of HC976E, Tallysman provides an optional embedded screw mounting ring, which fixes the outer edge of the antenna circuit board on the main circuit board or any flat surface.

Tallysman also provides support for the installation and integration of embedded helical antennas to achieve a successful implementation and provide the best antenna performance.

Tallysman's two new smart power GNSS signal distributors improve the reliability of GNSS services.

GNSS is a key component in safety, security, timing, and infrastructure applications, all of which require very high availability. Tallysman provides flexible, fault-tolerant intelligent power GNSS signal distributors, which are essential to minimize service interruption.

The design of the first-generation GNSS signal splitter had a single point of failure: only one connected receiver provided power to the splitter and antenna. If this receiver malfunctions or is unplugged, all connected receivers will also malfunction.

Tallysman's current generation Smart Power GNSS signal splitters TW162 (one antenna/two receivers) and TW164 (one antenna/four receivers) provide system redundancy and failover capabilities.

First, the splitter receives power from all connected GNSS receivers; if one receiver fails, the next connected receiver will automatically power the splitter and antenna.

Second, if the antenna fails and is not drawing current, it will provide a current draw of less than 1 mA to the receiver powering the splitter, indicating that the antenna is malfunctioning.

Tallysman TW162 and TW164 are professional-grade GNSS signal distributors that support full GNSS spectrum: GPS/QZSS-L1/L2/L5, QZSS-L6, GLONASS-G1/G2/G3, Galileo-E1/E5a/E5b/E6, Beidou -B1/B2/B2a/B3 and L-band correction service frequency bands.

TW162 and TW164 are packaged in a sturdy, compact, lightweight and waterproof (IP67) corrosion-resistant aluminum housing. Their splitters are available with TNC or N-type connectors. Two gain options are available: standard gain to compensate for signal separation loss and 10-dB gain.

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