TW55 Bias-Tee

Tallysman TW155 Bias-Tee

The TW155 bias-tee is a wideband bias-tee for injecting DC voltages onto coaxial lines.



The regulated output voltage and the high output current makes the TW155 bias-tee highly suitable for many active antennas and amplifiers. It is useable at higher frequencies with higher insertion loss.

The TW155 is housed in a robust RF sealed, weatherproof (IP67) clear anodized aluminum enclosure and is available with 3 x SMA or TNC Jack connectors.


  • L-Band Signal Distribution
  • GNSS (GPS/GLONASS) Signal Distribution


  • Low insertion loss: less than 1 dB at 3 GHz
  • Regulated output voltage: 5 VDC
  • .5 to 3 GHz operating frequency
  • Low insertion loss 1 dB @ 2 GHz
  • VSWR <1.3 @ 3GHz
  • Wide input voltage range: 5.5 to 10 VDC
  • Gold-plated SMA or TNC Jack connectors
  • IP67 and RoHS Compliant
  • High current output: 350 mA
  • RF sealed, clear anodized aluminum enclosure


  • Allows for external power supply
  • Compact form factor
  • Fits in-line with antenna cable
  • Robust design
  • Suitable for harsh environments
  • -40 °C to 85 °C temperature range


Calian GNSS (formerly Tallysman Wireless) offers a warranty of 1-3 years on all of it’s products. The warranty ensures that the products are free from defects of materials or workmanship and conform to Calian’s specifications under normal use. Embedded antennas are covered by a one (1) year standard warranty. All housed antennas and accessories (inline amplifiers, splitters, and bias tees) manufactured after January 1, 2020 are covered by a three-year warranty. The warranty is covered in more detail on the Calian GNSS Warranty page.

Why Buy from Us?

In business since 2004, Canal Geomatics is an authorized dealer for Calian GNSS and has established itself as an industry-leading distributor of high-precision positioning products in North America. Our mission is to find the best solution for each unique application and extend premium support to ensure the long-term success of our customers. We offer both volume and reseller discounts for the majority of our product lines.


The TW155 bias-tee is available through Canal Geomatics. If you would like more information about this product, please feel free to get in touch with us by completing the Request Pricing form.

TW155 Bias-Tee with SMA Jack connector (for internal use) – 32-0155-00
TW155 Bias-Tee with TNC Jack connector (for internal use) – 32-0155-01
TW155 Bias-Tee with TNC Jack connector (for external use) – 32-0155-02