Home » Products » Antennas » TW4039B Single Band GNSS Antenna (Pre-Filtered) Print Page

Item #: TW4039B

TW4039B Single Band GNSS Antenna (Pre-Filtered)

The Tallysman TW4039B is a very low power, low gain, compact GNSS antenna covering the GPS L1, as well as SBAS (WAAS, EGNOS & MSAS).

SKU: 33-4039B Categories: , Manufacturer: Tallysman Wireless

Tallysman TW4039B Single Band GNSS Antenna (Pre-Filtered)

Ideal for battery operated positioning and fleet management & asset tracking applications that require protection against close-proximity 700MHz LTE and L-band transmitting antennas, the TW4039B is very low power device, requiring a typical current of just 5.5 mA with constant characteristics over supply voltages from 2.5V to 16V – yet still performs with an excellent noise figure.

The TW4039B supports 1 dB RHCP received power across the full frequency and achieves 40 percent wider bandwidth than competitive antennas. Additionally, the TW4039B has a dual stage Low Noise Amplifier (LNA) with a mid-section SAW that supports a great axial ratio across the full frequency. It also includes an LNA pre-filter, for enhanced protection against high level sub-harmonic signals like LTE and near frequency signals such as WiFi. The TW4039B is housed in an industrial-grade weather-proof enclosure that can be surface mounted via magnet, screws or adhesive material.


  • 7 mA current draw
  • Invariant response, 2.5 to 16 VDC Supply
  • Low Noise 3.3 dB typ.
  • Axial ratio: 4 dB max.
  • Low gain: 16 dB typ.
  • IP67 weather proof housing


  • Longer battery life
  • Excellent signal to noise ratio
  • RoHS compliant
  • Ideal for harsh environments
  • Excellent out of band signal rejection
TW4xxx Housed Drawing
Dimensions in Millimeters

Tallysman TW4039B Data Sheet

Scroll to Top