[hpsdr] Data transmission functionality

[Bob McGwier]

In addition to this,  once I have all of the HPSDR boards (my card was
charged for Mercury today!  YIPPEE!),  I will add HPSDR and QS1R to GnuRadio
and thus DttSP.  I have need of all of them.  It is almost to the point
where it doesn't matter if it is USB2.0 or GigE, so long as certain
functions are there,  it can be married.

 

73

Bob

N4HY

 

 

ARRL SDR Working Group Chair

Member: ARRL, AMSAT, AMSAT-DL, TAPR, Packrats,

NJQRP, QRP ARCI, QCWA, FRC.

" Don't despair, not even over the fact that you don't despair. ", Kafka

 

From: hpsdr-bounces at lists.hpsdr.org [mailto:hpsdr-bounces at lists.hpsdr.org]
On Behalf Of Frank Brickle
Sent: Wednesday, November 26, 2008 9:47 AM
To: stevezsuzska at iinet.net.au
Cc: hpsdr at lists.hpsdr.org
Subject: Re: [hpsdr] Data transmission functionality

 

If you're interested in experimentation, you can't do better than GNU Radio:
<http://gnuradio.org/trac>
If you have multiple soundcards you can easily kludge up an analog patch
between GNU Radio processes and other software, simply to get off the ground
quickly.

We are currently working on seamless interoperability between GNU Radio and
DttSP
<http://dttsp.org> and <https://www.CGRAN.org>. Many of the conventional and
new digital regimes are already represented in the GNU Radio codebase. GNU
Radio is a natrual partner for supplying the DSP components absent from
DttSP.

Along the same lines, there are alternate UI applications (java-sdr and
sdr-shell) running on Linux and Mac OS X, which should be capable of
handling HPSDR without major surgery, if somebody wants to undertake the
modifications.

73
Frank
AB2KT



On Wed, Nov 26, 2008 at 2:57 AM, stevezsuzska at iinet.net.au
<stevezsuzska at iinet.net.au> wrote:

***** High Performance Software Defined Radio Discussion List *****



Are there any plans to implement HF data transmission functionality on HPSDR
for digital voice etc? I guess this would run on a PC connected to Mercury
and Penelope. It's an area I'd love to get more familiar with, particularly
modem design. There are some good digital voice systems around for amateur
use, such as FDMDV, but none is open source as far as I am aware. Can anyone
recommend any good introductory texts on this subject, which cover the
practical implementation of frequency offset correction, symbol
synchronisation and channel equalisation?

73 de Steve VK6ABZ



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