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[Discuss-gnuradio] First try with RTL2832

From: Farhad Abdolian
Subject: [Discuss-gnuradio] First try with RTL2832
Date: Sun, 15 Apr 2012 01:50:01 -0700 (PDT)

Hi folks,
Yesterday after a long wait I received my DVB-T unit in the mail (it arrived on my birthday). After some initial work, I got it to work with GNU Radio and GRC and today I made my first working FM receiver using the same blocks as the video from Ettus Research (building GR FM Radio in 10 minutes).

The design is using the Linux driver and the GR blocks made by Balint Seeber (thanks a million mate).

I have attached the GRC with this e-mail, hope you find it useful. I am now going to work on the RTL2832 block to fine tune it (I have the complete datasheet) and add more feature to it.
The problem I have is that the signals are not very strong, no matter how much I change the gain, the signal level is pretty low and the received audio is pretty noisy. I have managed to sample at 2Msps without any problems but when I sample more than that on my laptop, I get a lot of overflow.

I keep you posted on my progress, this is really exciting :)

Best regards,

From: Josh Blum <address@hidden>
To: Johnathan Corgan <address@hidden>
Cc: "address@hidden" <address@hidden>
Sent: Sunday, April 15, 2012 9:08 AM
Subject: Re: [Discuss-gnuradio] More dumpeths

On 04/14/2012 01:38 PM, Johnathan Corgan wrote:
> On Sat, Apr 14, 2012 at 13:30, Marcus D. Leech <address@hidden> wrote:
>>> Please try commit c787fb66, which is the merge on the former 'next'
>>> branch of a PMT library modification (this is one of the ones that
>>> failed in trellis for you, hopefully you can make it work.)
>> This commit fails.  But I had to roll-back to an older version of UHD to get
>> it to build.  Still failed though.
>>> If this last fails, please try branch 'test/undo-pmt-deleter', which
>>> I've pushed to the main gnuradio repository.
>> That works. No segfaults on exit.
> Excellent, thanks.  As this is in the 3.5.3 release, I'm going to
> rebase this 'fix' off the last 3.5.3 maint, but hold off merging it.
> I'm hoping Josh can supply an actual fix soon so we don't have to take
> that functionality out altogether.

Maybe its deleting itself: http://pastebin.com/XMSxLJk5


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