Re: [Discuss-gnuradio] Noob question 1

[Henk]

My thoughts Ton,
I just made the FM receiver Marcus advised and as discribed in tutorial 6.
This week I will ask a few questions about the configuration of these blocks.
Understanding is the key word for me.

Thanks

Henk

Op 7-9-2015 om 13:38 schreef Ton Machielsen:

Hooking in on the discussion here. I struggle with something similar. I know how to work gnuradio, that’s simple enough. What i want to learn more about is how to configure my own SDR using gnuradio. So what the various blocks are used for, when to use what block, etc. 

I have experience LISTENING to an SDR using various devices, now i want to BUILD one myself.

The final objective is to learn how to decode well known signals like the various HAM radio protocols like PSK31, etc. I know that all has been done before and the easy road is to take an existing flow graph, copy it and see that it works. But to understand what is happening is a whole different story.

So, without trying to hijack the thread, i am NOT looking for a gnuradio manual, i am looking for documentation on how to USE gnuradio for signal processing.

Thanks for the advice,

Ton.

On Mon, Sep 7, 2015 at 11:27 AM, Henk <address@hidden> wrote:

Hi Jan
Believe me, I am reading the tutorials, also the youtube lessons https://www.youtube.com/watch?v=N9SLAnGlGQs

But for me it is easier to understand basics when there is a basic working layout available. There is so much about GNURADIO
out there that a noob also needs some help with the help. (lol).

I am not a technician, developer or electronic engineer so the learning curve is steep.

Thanks for your replay and links.

When the RTL works I will post the layout here for others.

Best regards

Henk
www.sterrenwachtleeuwarden.nl


Op 7-9-2015 om 10:47 schreef Jan Krämer:

Hi Henk,

I suggest you start with the guided GNU Radio Tutorials [1]. They contain the basics to work with GNU Radio.

In Tutorial 6 it is explained how to use a hardware source (USRP, RTL Dongle) with the audio sink [2]. But I suggest finishing the other tutorials first if you have no experience with GNURadio.

Cheers and happy hacking,

Jan

[1] http://gnuradio.org/redmine/projects/gnuradio/wiki/Guided_Tutorials
[2] http://gnuradio.org/redmine/projects/gnuradio/wiki/Guided_Tutorial_Hardware_Considerations

2015-09-07 10:03 GMT+02:00 12henk12 <address@hidden>:

Hello all
4 weeks ago did my first steps into Linux Ubuntu.
I am trying to get the RTL-Dongel to work but still not succeded in that,
Time to ask some help.
There is a image with pre-installed drivers and GNU-Radio companion,
http://gnuradio.org/redmine/projects/gnuradio/wiki/GNURadioLiveDVD
I have downloaded that and put it on a USB stick. Works fine.

In the terminal I enter rtl_sdr -t and the RTL-dongel is found and it works.
Then I start GNUradio companion, it is version 3.7.7.1. The RTL is found in
the sources.
But the radio has a blue output and the audio-sink a orange one. In the
Help-doks it says that this is because of the datatype
but I cant change that anywhere. The dongel properties-block gives "complex
float 32".

Can you help me getting it to work? Only with a working system I can go
further learning.

Thanks

Henk
www.sterrenwachtleeuwarden.nl



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