• Very low noise
  • Wide input voltage range
  • Gold-plated SMA, TNC or N-Type Jack connectors
  • Nickel-plated brass, IP67 compliant housing

The TW120 is a rugged waterproof, low cost, low noise, low power, narrow band 25dB gain in-line amplifier, specially designed to tightly filter and boost weak GPS L1 signals, while maintaining low antenna noise figures.

The TW120 passes DC directly from input to output to support centre conductor DC supply to the antenna, and so avoiding the need for an additional bias source or bias “T”.


  • Enables extended cable runs
  • Avoids installation of costly low-loss cable
  • Fits in-line with antenna cable
  • No external voltage supply needed
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