K3; Digital Voice on HF

[Richard Fjeld]

(My apologies if this has been posted before)  This will be a slam-dunk with a K3.

One of our club members brought it to my attention.  It is about FreeDV, which is digital voice on HF using only 1.1 KHz of bandwidth, and of course with digital, there is no noise.

Here is an excellent video. http://www.youtube.com/watch?v=zijJ556cs08

This second video is a talk explaining it, and an interview with the code developer in Sydney.   http://www.youtube.com/watch?v=VuiuonwEPm4

It sounds like it is free, but I was not able to bring up the website.  (freedv.org)
It may have been down for maintenance.

Rich, n0ce

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[vk2rq]

It's free as in speech, as well as free as in beer :-)

You can grab the source from sourceforge using subversion:
https://freetel.svn.sourceforge.net/svnroot/freetel/fdmdv2/

I built it on my Mac, and made some QSOs with it on my KX3 -- it works FB. Here is what I did:

0) Pre-requisite: install Macports to provide dependent libraries:
http://www.macports.org/install.php
(I had already done this beforehand).

1) Check out source from subversion:
svn co https://freetel.svn.sourceforge.net/svnroot/freetel/fdmdv2/ fdmdv2

2) Change into the directory and apply the Mac OSX patch:
cd fdmdv2
patch -p0 <README.osx

3) Install library dependencies:
sudo port install wxWidgets30 +aui +universal portaudio +universal sox +universal libsndfile +universal libsamplerate +universal

4) Change to source directory and build:
cd src
make -f Makefile.osx

5) Run the program:
open FreeDV.app

Most of this is described in the README.osx file.

There are probably pre-compiled binaries for MS-Windows on the main site, but as mentioned below, it seems like that site is down at the moment.

73, Matt VK2RQ.



On 28/01/2013, at 6:10 PM, "Richard Fjeld" <[hidden email]> wrote:

> (My apologies if this has been posted before)  This will be a slam-dunk with a K3.
>
> One of our club members brought it to my attention.  It is about FreeDV, which is digital voice on HF using only 1.1 KHz of bandwidth, and of course with digital, there is no noise.
>
> Here is an excellent video. http://www.youtube.com/watch?v=zijJ556cs08
>
> This second video is a talk explaining it, and an interview with the code developer in Sydney.   http://www.youtube.com/watch?v=VuiuonwEPm4
>
> It sounds like it is free, but I was not able to bring up the website.  (freedv.org)
> It may have been down for maintenance.
>
> Rich, n0ce
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

______________________________________________________________
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