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Tallysman TW1027/TW1029 Low-Power Antenna

Tallysman's TW1027 and TW1029 antennas feature a compact form factor, low power consumption, and incredible performance.



The TW1027 and TW1029 by Tallysman are compact antennas covering the L1 GPS band. They offer incredible performance for a very low power consumption their nominal current consumption is one of the lowest available at just 2mA, while still providing 21dB nominal gain. The excellent out-of-band signal rejection means that nearby L-band transmissions won’t interfere, while the TW1029 comes with additional protection against high-level sub-harmonic frequencies.

Their incredibly compact form factor and low power consumption make the TW1027 and TW1029 both perfect for applications where a small size is an asset, such as enterprise asset management applications (asset tracking, fleet management, etc.), surveillance applications, and more.


  • Low power consumption, long battery life
  • Ideal signal-to-noise ratio
  • Available in multiple variations to better meet end user needs
  • Out-of-band rejection to keep signal clear
  • TW1029 includes additional Brick-Wall pre-filter to shield against antenna saturation

Technical Specifications

1 dB Bandwidth: 31 MHz
Antenna Gain: 24 dB (TW1027)/21 dB (TW2109)
Axial Ratio: Max. 4 dB
Supply Current: Max. 2.2 mA
Size (D ÌÑ W): 35 mm ÌÑ 7.25 mm
Weight: 30 g
Operating Temperature: -40 C to 85 C


The TW1027 and TW1029 are available through Blue Planet Geomatics. If you would like to learn more about them, please feel free to get in touch with us by completing the Request Pricing form.


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