Re: [Discuss-gnuradio] USRP N210

[Abdeslam Bourkane]

Hi Martin,

Problem solved. 

Thanks you

Abs

Abdeslam Bourkane

On 1 September 2015 at 19:26, Abdeslam Bourkane <address@hidden> wrote:

Hi Martin,

I'm receiving a sat signal via USRP N210 interfaced to a pc with ubuntu.

Before when I run the usrp_spectrum_sense.py it shows the following output :

linux; GNU C++ version 4.8.2; Boost_105400; UHD_003.009.git-171-g51bc00ee

-- Opening a USRP2/N-Series device...

-- Current recv frame size: 1472 bytes

-- Current send frame size: 1472 bytes

Using Volk machine: sse4_2_64_orc

gain = 19.0

2015-06-02 03:18:27.149244 center_freq 1000775000.0 freq 1000468750.0 power_db 5.58520464401 noise_floor_db -72.1895763839

2015-06-02 03:18:27.149282 center_freq 1000775000.0 freq 1000475000.0 power_db 6.39925714799 noise_floor_db -72.1895763839

2015-06-02 03:18:27.149342 center_freq 1000775000.0 freq 1000481250.0 power_db 11.4556676649 noise_floor_db -72.1895763839

2015-06-02 03:18:27.149409 center_freq 1000775000.0 freq 1000487500.0 power_db 14.7902792949 noise_floor_db -72.1895763839

2015-06-02 03:18:27.149454 center_freq 1000775000.0 freq 1000493750.0 power_db 13.7591168304 noise_floor_db -72.1895763839

2015-06-02 03:18:27.149492 center_freq 1000775000.0 freq 1000500000.0 power_db 9.48612353831 noise_floor_db -72.1895763839

2015-06-02 03:18:27.149531 center_freq 1000775000.0 freq 1000506250.0 power_db 5.03300407511 noise_floor_db -

Now some how the frequency does not change it printing the same frequency. (freq 1000460000.0)

So it seems the FFT not going to the right frequency so then I can't get the max power !

Thanks
Abs

Abdeslam Bourkane

On 1 September 2015 at 00:33, Martin Braun <address@hidden> wrote:

Hey Abs,

we'll need more info than that to help you. Also, please don't forget to
respond to the mailing list. So, please supply more info about your
setup, what exactly you're doing etc.

Thanks,
Martin

On 31.08.2015 15:30, Abdeslam Bourkane wrote:
> Hi Martin,
>
> Thank you for your reply. I have problem running the
> usrp_spectrum_sense.py  I thought maybe the max_power.py that caused the
> problem.
> The problem is that I cannot get the power any more it just showing an
> output of ~ 5dB ! Before I got ~14 dB ! when connecting N210 to the feed.
> I don't know why any help would be much appreciated.
> Regards
> Abs
>
> *Abdeslam Bourkane*
>
> On 31 August 2015 at 23:57, Martin Braun <address@hidden
> <mailto:address@hidden>> wrote:
>
>     Hi Abs,
>
>     it's just a flow graph that'll receive and transmit at max gain. You
>     don't have to revert the settings, they're not persistent.
>
>     Cheers,
>     Martin
>
>     On 31.08.2015 14 <tel:31.08.2015%2014>:46, Abdeslam Bourkane wrote:
>     > Hello,
>     >
>     > What is the result/consequence of running the max_power.py on USRP2 ?
>     > How to revert back ?
>     >
>     > Thank you
>     > Abs
>     >
>     >
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