Hello community,
I want to generate simple continuous wave with bladeRF using gnu radio and
am a Linux user.but in the gnu platform I am not getting any osmocom
source.i have downloaded the gnu from ppa .is there any supplement of
osmocom source to generate signal by bladeRF?
Your suggestions are h
Hi
You must install gr-osmosdr to use SDR dongle ( I don't use Blade
RF and don't know if there are other gr tools for Blade RF
source/sink )
at the end of september, for Linux distribution (Ubuntu 20.04 in
my case):
gr-osmosdr is not compatible
On Wed, Nov 04, 2020 at 12:38:27AM +0100, Kristoff wrote:
> So, what is iq-sampling?
> IQ-sampling is like sampling a normal ("real") signal -i.e. what most people
> are familiar with-, ... except that you sample the data twice for each
> period: once at timer "t" and a second time 1/4 sampling p
Thank you for the information. I have installed GRC byUbuntu ppa and I
believe that it has installed the latest version.in that case should I
delete and build the GRC from the beginning from source? please guide me.
On Wed, 4 Nov 2020, 6:58 pm Christophe Seguinot, <
christophe.segui...@orange.fr>
Hello,
Yes, as Christiophe mentioned i don't think we have a working version of gr
osmocom that is compatible with gnuradio 3.9.
If your ppa version of gnuradio that you have downloaded is 3.8.2 then you
just need to build osmocom sdr by pulling from its master branch.
You can find the gnuradio ve
Jef,
Concerning the term "slope". Well, I also have my doubts about it. I
think that for a lot of people, this would create the assumption that
the signal then goes from the 'i' value to the 'q' value in a straight
line, which is -as we know- not the case.
Sometimes it helps to -at first- g
Hi
Yes this is correct ( was correct in september 2020). You must
first uninstall gr-osmocom if you installed it from ppa, then
compile from source as indicated in the attached PDF file here https://lists.gnu.org/archive/html/discuss-gnuradio/2020-09/msg00124.html
In
Hi
I do agree with Jeff Long.
You will have to distinguish Sampling and IQ:
Complex signal are not related to sampling, even if sampled
signals in GR are generally complex
Complex signal come from the baseband equivalent
> On Nov 4, 2020, at 07:13, Fons Adriaensen wrote:
>
> Whenever I have to explain some DSP principles, I start with
> the complex valued version, and then showing the real-valued
> one as a special case.
This is absolutely correct here. If they are learning gnuradio, they obviously
want to d
Sorry the link was wrong see https://lists.gnu.org/archive/html/discuss-gnuradio/2020-09/msg00123.html
On 04/11/2020 14:22, Christophe
Seguinot wrote:
Hi
Yes this is correct ( was correct in september 2020). You must
first uninstal
Oops small correction, prior to decimate by 2 in the conversion, you have to
low pass filter by fs/4. (Or use a decimating filter)
Whoops.
-
Anon
> On Nov 4, 2020, at 08:47, Anon Lister wrote:
>
> Now decimate by two since you have two empty halves of visible bandwidth at
> the edges.
Here’s a YouTube video that’s got a bit of pencil math (so it doesn’t drone on)
and oscilloscopes (for the ham guys), so it’s got a bit for everyone .
https://m.youtube.com/watch?list=PLvOgjCaG0WzDAF1Um894vv95mrcyortOB&v=h_7d-m1ehoY
> On Nov 4, 2020, at 7:52 AM, Kristoff wrote:
>
> Jef,
>
>
David, all,
Well, I had also been thinking about this.
I do like the idea of the spinning doll. It provides a model for
positive and negative frequencies: if it spins one way, the frequency is
positive, if it spins in the other direction, it is a negative frequency.
And, it does also give a
Now, unless I am completely wrong, the model you use captures both the
I and the Q samples at the same time. This means that there is no
element of 'time'.
In electronics, this works fine, due to the nature of mixing and a
difference of phase of the two Local-Oscillators.
But that's not how pe
For those interested in using GNU Radio in amateur radio applications,
we have set up an On-line video meeting
** I will present a program on Frequency Shift Keying, with a live
On-the-Air demonstration of radioteletype
** It will be on **Saturday 7 November 16:00 UTC**
** see the details at htt
Don,
A small (slightly) remark about this video, and about hams.
When I gave my first video-presentation for the Belgian SDR Meetup (in
September), I have a presentation on GR (an example of an RTTY decoder).
But, to keep the presentation on topic, I first posted a "list of
interesting things
You can lead a horse to water...
Then there's hams like this: https://g3rbj.co.uk/
On Wed, Nov 4, 2020 at 12:04 PM Kristoff wrote:
> Don,
>
>
> A small (slightly) remark about this video, and about hams.
>
> When I gave my first video-presentation for the Belgian SDR Meetup (in
> September), I
On Wed, Nov 04, 2020 at 05:14:00PM +0100, Kristoff wrote:
> For us, "even if we would be able to look at a rotating object up-front and
> from a 90 degrees angle at the same time, if the object would be frozen in
> time we would still not be able to determine if the doll rotates left of
> right".
"Twice the bandwidth" but that doesn't account for the 0 Hz "hole" where
the incoming signal is exactly at the sampling rate.
Or am I missing something?
On Wed, Nov 4, 2020 at 3:28 PM Fons Adriaensen wrote:
> On Wed, Nov 04, 2020 at 05:14:00PM +0100, Kristoff wrote:
>
> > For us, "even if we wou
On 11/4/20 6:26 PM, david vanhorn wrote:
"Twice the bandwidth" but that doesn't account for the 0 Hz "hole"
where the incoming signal is exactly at the sampling rate.
Or am I missing something?
What "hole" are you referring to? There is the "zero bang", which occurs
because most systems aren'
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