The TW3870/TW3872 employs Tallysman’s unique Accutenna™ technology covering the GPS L1/L2, GLONASS G1/G2, Galileo E1, BeiDou B1, and SBAS (WAAS, EGNOS & MSAS) frequency bands. It provides truly circular response over its entire bandwidth thereby producing superior multipath signal rejection. This antenna sets a new price/performance standard in its category.
支持GPS L1/L2, GLONASS G1/G2, 北斗B1,Galileo E1和SBAS (WAAS, EGNOS & MSAS)；NGS认证。
The TW3872 has a pre-filter which increases the antenna’s immunity to high amplitude interfering signals, such as LTE and other cellular signals. TW3872具有预滤波器，可增强天线抵抗高幅度干扰信号（如LTE和其他蜂窝通信信号）的能力。
The TW3870 is housed in a through-hole mount, weather-proof enclosure for permanent installations. It is available with either a flat or conical radome in either grey or white. The TW3870 is also available with either a TNC or N-Type connector on the base of the antenna or with a flying lead and a variety of connectors. TW3870有通孔安装、TNC或N型连接器。
L-Bracket or Pipe Mount (part numbers 23-0040-0, 23-0065-0 respectively) are available for non-rooftop installation. TW3870可选管型支架、L支架安装在非屋顶场合。
The TW3870 is IP67, REACH, and RoHS compliant.
Twin Dual, quadrature feeds
Radome: EXL9330, Base: Zamak White Metal
Through hole (M18 x 1 thread)
IP67, REACH, and RoHS compliant
35dB typ, 32 dB min, each of L1 and L2 Bands,
18mA typ. at 25°C
2.5 to 16 VDC nominal (12VDC recommended max.)
2dB max at 25°C
Axial Ratio, over full bandwidth, both L1 & L2:
<2dB typical; 1dB max. at Zenith; 3dB at horizon
For further details, please download the Datasheet.
The attached PDF contains graphical representation of the axial ratios, Phase Centre Variation (PCV) and gain patterns over elevation and rotation.
This PDF document shows the plots of the Antex files created by NGS. TW3870天线获NGS认证！
The raw files can be found on the NGS website here:
Tallysman TW3870 NGS Calibration Files