[Hackrf-dev] LNA on HackRF One?

[Adam Cartwright]

Just to report back - the LNA I'm using is a nice little add to the HackRF.
 I didn't do any scientific testing, just visual observations. Here are my
results:

Receive: noise floor dropped almost 10dB for me in SDR#, and signals where
I was using 24dB of gain to get in solid are now solid with 0dB gain.
Before I was struggling to decode some DMR traffic, but now it's clear and
decoding 100%.  Of course, most of this is due to my limited antenna
placement, but I'm pretty pleased.

Transmit: using the little rubber duck antenna that the prototype came
with, and turning the LNA around, my simple tests exceeded my expectations
and my transmit range more than doubled.

I don't have a lot of experience in this field (yet), but am pretty pleased
with the results.



On Thu, May 29, 2014 at 9:21 PM, Adam Cartwright <adam.cartwright at gmail.com>
wrote:

> I received today an LNA4ALL (http://lna4all.blogspot.com) and LNA4HF. Are
> there any precautions I should take when using with HackRF?
>
> For receive, I assume I should avoid using the amp with the LNA? Is there
> a chance I could overdrive and damage the HR with this thing?
>
> For transmit, I think I can get some amp by reversing the LNA, what do you
> think?
>
> Will try tomorrow when I get the LNA's mounted and powered.
>
> -adamc
>
>
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