LNA preamp with BIAS-T for HackRF Airspy SDRPlay

Preamplifier and LNA (low noise amplifier) specially adapted with BIAS-T for HackRF One, AirSpy, SDRPlay and RTL-SDR V3 usb stick.

It highly increases the reception performance (+ 11dB to + 23dB) and operates on frequencies from 28MHz to 2500MHz (2.5Ghz).

This version of LNA4ALL, modified by the original designer, allows to be powered directly via the SMA wiht BIAS-T + 3.3V power of HackRF One, Airspy, SDRPlay and RTL-SDR V3 USB stick.

Note: This version can only be powered by SMA, the power mode 6V/9V directly on the card is no longer possible with this modified model.

See also the LNA4HF version for shortwave and HF bands from 150kHz to 30Mhz.

Availability: In stock and shipped from Europe

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    39,90 €VAT Inc.
    33.25 VAT Exc.

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    LNA4ALL for HackRF & AirSpy

    Power supply: Power through SMA of HackRF or Airspy
    Consumption: 18mA
    Frequency range: 28MHz - 2500MHz
    Receive gain: 11 to 23dB (cf. diagram)
    NF: 0.75dB @ 1GHz
    Impedance: 50 ohms
    Antenna Connector: SMA Female
    Dimension: 25x25 mm


    This preamplifier LNA is highly efficient and need to be use with caution, never use near strong signals (FM radio station amateur radio, walkie-talkie, etc.) under penalty of "grill" your device immediately SDR HackRF One or AirSpy!

    How to protect the LNA from ESD?

    The static discharge can damage the LNA if it is not protected and used properly.

    1 - Never leave the LNA plugged permanently or placed permanently behind an antenna on the mast
    2 - Disconnect the antenna and ensure proper grounding of the LNA and antenna, before reconnecting the antenna cable discharging static electricity
    3 - It is also possible to add extra protection diode BAV99 welding (scratch first location) to the input of the antenna as shown in green on the following picture:

    So if lightning the diode will be damaged but not the rest of the LNA card.

    No LNA will be returned or exchanged due to misuse.


    Reviews LNA preamp with BIAS-T for


    Fonctionne très bien!

    Ce préampli fonctionne très bien : il y a une réelle différence !
    Pour le HackRF, l'activation logicielle (avec gqrx) est réalisée en ajoutant le paramètre "bias=1".

    Write your review !

    Write your review

    LNA preamp with BIAS-T for HackRF Airspy SDRPlay

    LNA preamp with BIAS-T for HackRF Airspy SDRPlay

    Write your review

    • Rating: 5/5 based on 1 reviews
    • Product: LNA preamp with BIAS-T for HackRF Airspy SDRPlay
    • SKU: LNA4ALL2-288
    • Price: 39,90 € VAT incl.
    • Availability:In stock and shipped from Europe

    Payment accepted: By Credit Card, VISA, MasterCard, Paypal and bank wire (T/T).

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