Tallysman is rolling out three new antennas for simultaneous reception of L-band correction signals and all of the upper-band GNSS signals, including GPS L1, GLONASS G1, Galileo E1 and BeiDou B1.
The TW2920 model's 1dB bandwidth covers 1525MHz to 1559MHz for the L band downlink and 1559MHz to 1610MHz for the upper-band GNSS. The LNA of the TW2920 provides 28dB of gain; a higher gain version with 35dB LNA gain is available as the TW2940 model. The TW2926 antenna is an unhoused OEM version of the TW2920 with 28dB of gain.
The antennas employ Tallysman’s Accutenna technology, which provides strong cross-polarization rejection for improved multipath rejection, as well as low axial ratio and tight Phase Center Variation. These antennas are smaller, lighter and less expensive than similarly capable antennas on the market, without compromising performance, Tallysman says.
All of the antennas include a sharp pre-filter to protect against sub-harmonic signals such as 700MHz LTE and strong near frequency signals such as WiFi.
The TW2920 and TW2940 have metal bases with wide temperature range plastic radomes, 57 millimeters in diameter and 15 millimeters in height, with a magnetic mount or adhesive mount along with four tapped screw holes. They are IP67-compliant and available with either a watertight SMA connector on the bulkhead or with a RG174 cable with the user’s choice of connector.
The TW2926 OEM version of the antenna is 56 millimeters in diameter and has four drilled, plated holes for secure mounting. The antenna can be custom tuned to ensure optimal performance within a particular enclosure. The antennas are REACH and ROHS compliant.
Tallysman is a leading manufacturer of products for a wide range of GNSS applications. Tallysman’s mission is to provide GNSS antennas that meet the needs of a new generation of positioning systems, providing unprecedented accuracy at ever decreasing prices.