[Hackrf-dev] HackRF hardware problems

[indy747 at gmail.com]

My one unit is definitely bad (I have two) - it's noisy, has poor 
sensitivity, and when you turn on the LNA, it pretty much kills the 
signal.  Something is bad in the front-end.  Don't know if it's a 
switch, LNA, or both.  Mike should be replacing defective units, but I 
can't even get a response from him.  It's absurd that all these 
companies like Nooelec are selling the unit, and then just referring us 
to Mike if there is a problem.  They should be replacing defective units 
and dealing with Mike.  We waited nearly a year for the kickstarter with 
all of the delays, and then get shipped defective units?  I'm going to 
have to start a campaign complaining to all of the sellers of the hackrf 
and ask why they are selling defective products with no warranty.

On 11/26/2014 8:46 AM, McDonald, J Douglas wrote:
>
> Several people have complained with HackRF problems, worrying if their
>
> unit is defective.
>
> I have the same worries. Mine clearly is nowhere near as good as
>
> the DVB dongles.  But it clearly works, no quibble. It works both in
>
> SDR#/Windows and Gnuradio/GRC/Ubuntu.
>
> But it is plagued by spurious spikes of near-CW stuff everywhere, even
>
> up in the upper GHz areas where there should be essentially nothing.
>
> It sees Wi-Fi fine ... but covered by these spurious carriers. And
>
> many of them are DIFFERENT in SDR# and Gnuradio. And using both
>
> they are dependant, both in amplitude and frequency, on the
>
> gain settings at the low gain end as well as the high gain end.
>
> That dependance at the low gain end implies to me that its is
>
> incorrectly dithered or some software problem.
>
> I bought it for the wide bandwidth for certain special purposes
>
> and it serves those purposes OK even in the presence of the garbage.
>
> But for general use, its a plain, and expensive, joke.
>
> Doug McDonald
>
>
>
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