Re: [Discuss-gnuradio] FUNCube dongle

[Patrik Tast]

Hi Alexandu,

Oh yes, by plugging it into an audio source it will work as is with GR.

We wonder how to rip the I and Q's and pass them further to GR for 
(de)modulation
We need to study the dongle and its ICs more

Thanks,
Patrik


----- Original Message ----- 
From: "Alexandru Csete" <address@hidden>
To: "Patrik Tast" <address@hidden>
Cc: <address@hidden>; "Jerry Martes" <address@hidden>
Sent: Saturday, February 19, 2011 18:46
Subject: Re: [Discuss-gnuradio] FUNCube dongle


> On Sat, Feb 19, 2011 at 4:58 PM, Patrik Tast <address@hidden> 
> wrote:
> > Hi All,
> >
> > Has anybody tried the FUNCube USB dongle?
> > http://www.funcubedongle.com/
> >
> > How tricky would it be to add GNU Radio support for it?
>
> Hi Patrik,
>
> The FCD works as is with GNU Radio since it is an audio source. I used
> GNU Radio for my initial tests:
> http://www.youtube.com/watch?v=daY-fkMYN_M
>
> Changing frequency can be done using the qthid control application.
> The one on the website is known to crash and freeze. I have since
> forked it and applied the necessary fixes to make it run stable. It is
> available here: https://github.com/csete/qthid although not quite 100%
> stable unless FCD is running the 18f firmware.
> Once I'm done with this I will implement the remaining API for setting
> gains and filters and eventually there will be a "libfcd" which can be
> included in a GNU Radio block.
>
> I'm not sure if it makes sense to create a GNU Radio block for this
> since the FCD is already an audio source and a block is not necessary
> for setting frequency and such. I guess it would still be useful for
> using it in GRC applications.
>
> Alex