Tallysman GNSS Amplifier


The TW125B is a low cost, rugged, waterproof, low noise, low current/low voltage, 1.2 to 1.8 GHz band, 28dB gain in-line amplifier. The TW125B is specially designed to amplify all GNSS frequency signals, from GPS L2 to GLONASS L1. This amplifier provides for much longer cable runs from antenna to receiver, for applications such as mast-mount, large vehicle and timing systems, without degradation of system sensitivity.
Its low loading allows for both the antenna and the TW125B in-line amplifier to be powered by the GNSS receiver. The TW125B passes DC supply to the antenna, therefore not requiring additional hardware such as bias-T, power cable and power supply.

Applications include:
– All GNSS Signals – GPS, GLONASS, Galileo, BeiDou & SBAS
– Commercial, Industrial and Military Telematics Systems
– Wireless and Telecom Timing and Synchronization Applications
Benefits provided by the TW125B amplifier:
– Improves signal reception
– Enables extended cable runs
– Avoid installation of costly low-loss cable
– Fits in line with antenna cable
– No external DC power supply required
– Easy to install – mounting clamp included


Key Features

  • Low Current / low voltage
  • Very low noise
  • Wide input voltage 3 to 16 Volts
  • Nickel-plated brass, IP67 compliant housing
  • Powered via antenna coax from receiver
  • 50 Ohm port impedance
  • Available SMA, TNC, and N-Type jack connectors
  • RoHS and REACH compliant

Additional information