fldigi?

[jmly...@gmail.com]

Anyone using fldigi with gqrx?

So far I've found that I had to install PulseAudio Volume Control. Not sure if any of it is configured correctly. The manual is massive and the list of supported protocols is too... most I've never heard of. I'm not seeing a clear signal in the fldigi waterfall similar to the gqrx waterfall.

Any suggestions? Is there a simpler app that I should start with?

I haven't built the upconverter yet, so I can only tune 24MHz up. I'm seeing a lot of digital activity on 23 cm.

Thanks,
James
Ubuntu 14.04LTS

[Alexandru Csete]

On Tue, Oct 13, 2015 at 10:09 PM, <jmly...@gmail.com> wrote:
> Anyone using fldigi with gqrx?

Yes, many people do including myself :-)

> So far I've found that I had to install PulseAudio Volume Control. Not sure
> if any of it is configured correctly. The manual is massive and the list of
> supported protocols is too... most I've never heard of. I'm not seeing a
> clear signal in the fldigi waterfall similar to the gqrx waterfall.
>
> Any suggestions? Is there a simpler app that I should start with?

First, you configure fldigi to use pulseaudio. Sencond, you go go into
the PulseAudio Volume Control. Under recording applications you will
see fldigi and here you can select an input source for fldigi. This
should be "Monitor of built in analog..." something like that.

I have written briefly about it here:
http://oz9aec.net/index.php/gnu-radio-blog/463-gqrx-and-pulseaudio

There may be other, more thorough tutorials on the web.

Also do a search on this list. I vaguely recall people talking about
that fldigi has to be set for a specific sample rate for the interface
to work correctly.

Alex

[jmly...@gmail.com]

Alex, thanks!

I'll check out your document.

Any suggestion on a "test" protocol and frequency range where I might find some of this traffic to debug with?

James

[Alexandru Csete]

Well, there is a lot of CW, PSK and RTTY on HF but on VHF and up, it
really depends on the region.

I think you can test the fldigi part using websdr, even though the
browsers (firefox and chrome) don't use pulseaudio directly.

Alex

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[jmly...@gmail.com]

The references helped a lot. I had to go into Pulseaudio Volume Control and:

    Go to Tab: Input Devices and set
        Show: Monitors and set
        Monitor of Internal Audio Analog Stereo

Then
    Go to Tab: Recording and set
        Show: Applications
        Monitor of Internal Audio Analog Stereo

Now I'm getting a signal to fldigi. I now need to match up a signal to a mode.

What is websdr?

Thanks,
James

[jmly...@gmail.com]

Ok, dumb question(websdr). Found it and tried to run it. It doesn't run correctly on Ubuntu - it needs
the Sun java packages which aren't shipped with Ubuntu anymore(OpenJDK). I'm checking if loading the Sun packages will break
another application(MPIDE) that I use before I try to load them.

websdr looks pretty slick.

Thanks for the help.

James

[Alexandru Csete]

On Thu, Oct 15, 2015 at 10:39 PM, <jmly...@gmail.com> wrote:
> Ok, dumb question(websdr). Found it and tried to run it. It doesn't run
> correctly on Ubuntu - it needs
> the Sun java packages which aren't shipped with Ubuntu anymore(OpenJDK). I'm
> checking if loading the Sun packages will break

No, please don't ruing your computer with java! Just select the HTML5
version; it should work with all recent versions of firefox and
chrome.

Alex

[jmly...@gmail.com]

Alex:

The HTML5 option did not work with the version of Firefox shipped with 14.04LTS. I had no audio
on my head phones.

The other app I was concerned about runs ok with Sun java8, so I installed the Sun packages
and websdr now has head phone audio and connects to fldigi. Listened to some 40m CW.

Thanks for the help.

James