[Hackrf-dev] LNA4ALL

[Martin Smith]

A low noise amplifier with a relatively low (linear) gain at the antenna, will
do more to improve the noise figure than anything else.

http://ava.upuaut.net/?p=836

http://www.rtl-sdr.com/rtl-sdr-blog-units-back-in-stock-polling-on-future-upgrades/#comment-80749

The above two links should help you understand why people use LNA's away from
the receiver.


On 01/02/2017 10:50, Marc Pàmies Massip wrote:
> Dear all,
>
> I wanted to ask if it is worth using an external LNA (specifically an LNA4ALL) to improve the reception performance of the HackRF-One. I know it is a basic part of any radio communications systems, but I don't get why it could be necessary if the HackRF already incorporates an internal LNA. Does the use of an extra LNA has any drawback that I might consider? It would improve the reception of weak signals?
>
> Wouldn't it make more sense to add a preselector filter instead, as those are missing in this device? 
>
> Thanks in advance,
>
> Marc.
>
>
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