Usually there is a LNA next to antenna, while SDR devices also have gain setting so we can increase the gain.
As i know LNAs are amplifying all signals with same gain (Am I right?)
So i wonder what is the point of LNA here?
if the SDR device can amplify the signal using gain settings why should we use a LNAs?
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Ariyan
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2There are two questions with good answers on this subject, the second one gives a detailed rundown of why LNAs help - do these answer your question? – tomnexus Jun 06 '22 at 22:17
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@tomnexus: yes thanks, the second link made every thing clear. – Ariyan Jun 06 '22 at 23:14
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1awesome! then let's mark this as answered by that for future readers! – Marcus Müller Jun 07 '22 at 11:14