Tallysman TW3870E/TW3872E

TW3870E/TW3872E GPS L1/L2 + GLONASS G1/G2 Antenna

The TW3870E/TW3872E employ Tallysman's unique Accutenna technology providing dual band GPS L1 & L2, GLONASS G1 & G2, Galileo E1, and BeiDou B1 coverage and is especially designed for precision dual frequency positioning.

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Overview

The TW3870E/TW3872E employ Tallysman’s unique Accutenna technology providing dual band GPS L1 & L2, GLONASS G1 & G2, Galileo E1, and BeiDou B1 coverage and is especially designed for precision dual frequency positioning.

Both antennas feature a precision tuned, circular dual feed, stacked patch element. The signals from the two orthogonal feeds are combined in a hybrid combiner, amplified in a wideband LNA, then band-split for narrow filtering in each band and further amplified prior to recombination at the output. The TW3872E has a pre-filter which prevents the front end LNA from being saturated by high near frequency or harmonic signals.

They also offer excellent axial ratio and a tightly grouped phase center variation.

The antenna is supplied with a standard 60 mm diameter circular ground plane, with a coaxial cable terminated with a connector (right angle MCX is shown in the drawing). Mounting holes are provided for attachment to larger ground planes. Custom tuning and ground plane options may be available, depending on purchase level commitment.

Applications

  • Precision GPS position
  • Dual Frequency RTK receivers
  • Mission Critical GPS Timing
  • Military & Security
  • Network Timing and Synchronization

Features

  • Very low Noise Preamp, < 2dB
  • Axial ratio: < 2 dB typ.
  • Tight Phase Center Variation
  • LNA Gain 35 dB typ.
  • Low current: 24 mA typ.
  • ESD circuit protection: 15 KV
  • Invariant performance from: +2.5 to 16VDC

Benefits

  • Ideal for L1/L2 RTK surveying systems
  • Great multipath rejection
  • Increased system accuracy
  • Great signal to noise ratio
  • IP67 and RoHS compliant

Ordering Information

TW3870E – GPS L1/L2 + GLONASS G1/G2 antenna 33-3870E-xx-yyyy-zz
TW3872E – Pre-filtered GPS L1/L2 + GLONASS G1/G2 antenna 33-3872E-xx-yyyy-zz

Where xx = connector type, yyyy= cable length in mm and zz is reserved for Tallysman’s use