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TW8825 Dual Band GNSS Antenna

The TW8825 employs Tallysman’s unique Accutenna technology providing dual band GPS L1/L5, GLONASS G1, Galileo E1/E5a, and BeiDou B1 coverage and is especially designed for precision dual frequency positioning where light weight is important.  The TW8825  features 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 wide-band LNA, then band-split for narrow filtering in each band and further amplified prior to recombination at the output.

SKU: 33-8825 Categories: , Manufacturer: Tallysman Wireless

Tallysman TW8825 Dual Band GNSS Antenna

The TW8825 from Tallysman features 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 wide-band LNA, then band-split for narrow filtering in each band and further amplified prior to recombination at the output. Ideal for dual frequency positioning where minimizing weight is important, the 52-gram TW8825 offers excellent axial ratio and tight phase center variation (PCV). Features 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 wide-band LNA, then band-split for narrow filtering in each band and further amplified prior to recombination at the output, also includes an LNA pre-filter that provides enhanced protection against high level sub-harmonic signals like LTE and near frequency signals such as WiFi. Is housed in an industrial-grade weather-proof enclosure that can be surface mounted via magnet, screws or adhesive material.

The TW8825 has a pre-filter which increases the antenna’s immunity to high amplitude interfering signals, such as LTE and other cellular signals.

Features

• Very low Noise Preamp, 2.5dB
• Axial ratio: <2dB typ.
• Tight Phase Center Variation
• LNA Gain 26 dB typ.
• Low current: 12 mA typ.
• ESD circuit protection: 15 KV
• Invariant performance from: +2.5 to 16VDC

Benefits

• Lightweight (52g excluding cable and
connector)
• Ideal for L1/L5 RTK surveying systems
• Great multipath rejection
• Increased system accuracy
• Excellent signal to noise ratio
• IP67, REACH, and RoHS compliant

Applications

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

Coverage

GPS/QZSS L1/L5, GLONASS G1, Galileo E1/E5a, BeiDou B1/B2a, NavIC L5

Mount

Surface Mount / Magnet / Adhesive

Amplifier Gain

26 dB typ.

Connector Options

Many Options, Please Inquire

 

Tallysman TW8825 Dual Band GNSS Antenna Data Sheet

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