[amsat-bb] Re: D STAR

[lucleblanc6 at videotron.ca]

On 11 Nov 2013 at 10:51, Tony Langdon wrote:

> On 11/11/13 7:45 AM, Patrick STODDARD (WD9EWK/VA7EWK) wrote:
> > Stefan,
> >
> > It appears that stations attempting to work D-Star via
> > satellite would need to use two radios.  This was the
> > case a few years ago, when AA4RC and N3UC were able to
> > make a brief QSO on AO-27.  You can read about what gear
> > the used, along with some useful tips for trying D-Star
> > via satellite, at:
> If the new satellite has AFC and a 2m uplink, existing D-STAR radios 
> should be suitable for the uplink.  That leaves the downlink, where I'd 
> probably use something like an all mode radio with computer controlled 
> Doppler correction and a GMSK modem with DV Dongle or DV-RPTR board with 
> an on board AMBE decoder.
> 
> Where things could get really interesting is D-STAR allows easy 
> interfacing to the Internet, so theoretically, you could enable (for a 
> few minutes!) global connectivity to remote areas.
> 
> -- 
> 73 de Tony VK3JED/VK3IRL
> http://vkradio.com

You can read and hear about my first AO-27 DSTAR test transmission made on September 5 2009.  Unfortunately numerous attemps to have 
another station to complete a QSO remain unsuccesfull. Some stations where not able to get to the satellite.

You can hear the audio recording on Matthias dd1us web site  http://www.dd1us.de/spacesounds%202c.html
scoll down to:

Amrad OSCAR 27
(EYESAT-1)
#22825
(1993-061C)

"Usually analog FM voice transmissions are used via AO-27. However the new DSTAR standard 
which is intended to be used via terrestrial FM repeaters can be also used via satellite as the test
transmission of Luc Leblanc VE2DWE demonstrates. He used an ICOM IC2200 TRX for
the 436.795 MHz downlink and a ICOM ID-800H for the 145.850 MHz uplink.
Recorded on September 5th 2009 at 22:49 UTC and kindly provided by VE2DWE."


You can also hear the recording on my web page at:   www.qsl.net/ve2dwe (Firefox will not let you hear it IE will...)

Luc Leblanc VE2DWE
WAC BASIC CW PHONE SATELLITE