• 22dB LNA 50MHz - 1GHz with RF and ESD protection
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RF Guru

ESD & RF Protected Generic WideBand LNA +20dB from 50MHz to 1GHz

ESD & RF Protected Generic WideBand LNA +20dB from 50MHz to 1GHz

€19,50 EUR
€19,50 EUR
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ESD & RF Protected Low Noise Amplifier — +20 dB Gain

This high-performance Low Noise Amplifier (LNA) is designed for wideband applications from 50 MHz to 1 GHz. It integrates a dedicated ESD & RF protection circuit for reliability in demanding SDR and RF front-end setups.

Key Features

  • Operating Frequency: 50 MHz – 1 GHz
  • Amplifier Module: Mini-Circuits PGA-103+
  • Gain: 25 dB (low end) tapering to ~16 dB (upper end)
  • Noise Figure: 0.6 dB — ultra-low noise for minimal signal degradation
  • Linearity: IP3 > 41 dBm — excellent resilience against strong nearby signals
  • Output Power (P1dB): 22.5 dBm — supports robust amplification
  • Power Supply: 5 V / 3 V via Bias-T — allows remote power injection
  • Built-in Protection: ESD & RF protection (DC decoupling + high-frequency Schottky diode)

Additional Resources

This LNA is ideal for applications requiring low noise and high gain, such as weak-signal reception in VHF/UHF front-ends and SDR setups.

Perfect for SDR Enthusiasts

Works seamlessly with any SDR supporting a 5 V or 3 V Bias-T, including the popular RTL-SDR and other wideband receivers.

Mini-FAQ

  • Do I need a Bias-T? — Yes, power is injected via a 5 V or 3 V Bias-T. If your SDR lacks Bias-T, use an external Bias-T injector.
  • Where should I place the LNA? — As close to the antenna as practical to minimize feedline loss before amplification.
  • Can I run it near a transmitter? — It’s ESD/RF-protected and highly linear (IP3 > 41 dBm), but strong nearby TX can still overload. Add filtering or more spacing if needed.
  • What’s the real-world gain? — About 25 dB around VHF, gently tapering toward ~16 dB near 1 GHz.
  • What’s the noise figure? — ~0.6 dB under typical conditions, ideal for weak-signal work.
  • Is it DC-blocked? — Yes. Built-in DC decoupling and a high-frequency Schottky provide input protection.
  • Which SDRs are compatible? — Any SDR that supports 3–5 V Bias-T (or works with an external Bias-T), e.g., RTL-SDR, Airspy, SDRplay, etc.
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