[Hackrf-dev] Testing my new HackRF One

[Jay Bougie]

On the subject of properly tightening down SMA connections, they do
actually make torque wrenches for this specific case, they go from  $30-200
USD.

Zero's suggestion for tightening, (which is more than just 'finger tight' )
will work for most. A 5/16" wrench is also an option, if used carefully.
SMA can be over-tightened and connectors destroyed.


On Thu, Aug 21, 2014 at 10:33 PM, Rick "Zero_Chaos" Farina <
zerochaos at gentoo.org> wrote:

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> On 08/21/2014 06:43 PM, emmanuel.fuste at laposte.net wrote:
> > Hello,
> >
> > As Jon B and Larry, I got my HackRF One working under GQRX, GNURadio &
> gr-osmosdr (Debian Sid and Pentoo) but got only noise and a flat spectra.
> > I was very worried that the RF stage is dead (sorry Michael for the
> hurry ...).
> > But as I was not alone, and with the drastic fab validation Michael put
> in place, the problem is surely not there...
> > - Tomorrow, I will try to play a bit more with the gain settings. I was
> a bit shy and did not push the settings too far.
> > - Will test the antenna, perhaps this is the same problem as Jon ?
> >
> > With my 868Mhz alarm remote fired at 1m50, I see the transmission pulse,
> but with a very very low signal. An antenna problem is a good track : the
> signal strength is the same with and without antenna !!
>
> One of the issues I've seen a lot is that people think that any antenna
> that screws on is "good enough".  The antenna included with the HackRF
> is SMA, while a lot of people have many RP-SMA antennas around already
> (commonly used in wifi).  While the screw part will fit, nothing will
> actually connect since they are different connectors.  While that may
> not be your issue, I've seen a lot of people with it.
>
> The other issue I've seen is people don't seem to screw the antenna down
> all the way.  I'm not suggesting you put serious strength into it or
> anything, but make sure you actually tighten it down until, you know, it
> gets tight.  It seems to screw on just a bit further than some people
> realize.
>
> - -Zero
> >
> > Whatever I will find, it deserve a small "RF validation procedure for
> beginner" tutorial.
> > I hope it will only be a big fright...
> >
> > Emmanuel.
> > ---
> >
> >
> >
> >
> > _______________________________________________
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> > HackRF-dev at greatscottgadgets.com
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> >
>
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