Phil,
you probably know an order of magnitude better than me, but anyway: if you
have the freedom to design the transmission mode, have a look at the
techniques used by DVB-T/DVB-H, which face similar or worse multipath
problems (transmitter is much closer to the ground): use COFDM, splitting
the
Raydel,
Apart from the frequency and signal level differences, DVB-T is a 6-8MHz
wide signal with COFDM modulation, using 2k to 8k subcarriers, while DVB-S
is a single carrier, 6..36MHz wide signal, usually QPSK or 8PSK. You cannot
use a downconverter and a DVB-T receiver to tune into a DVB-S chan
Anthony,
> I have a few Windows computers running the AGW Packet Engine as a Software
> TNC. I would like to find something that provides similar functionality but
> for Linux. I am hoping someone out there uses a Linux computer with a
> software TNC for satellites, but if nothing else would like
Hi,
2011/11/29 John Geiger
(...)
> is still doing fine. AO51 made it around 6 years. What is the main
> difference between the 2 satellites that might explain the 300% difference
> in operational life?
>
>
Even more generally: what are the most frequent death causes for amateur
satellites?
>F
Hi,
> Perhaps someone on this list knows of a good video capture utility that'll
> work on the NASA website.
>
>
Video capture utility? tcpdump is your friend :)
Saved to http://www.megaupload.com/?d=5S6R67YH for the benefit of the
flashplugin-impaired - download and play with videolan, mplayer
Bob,
> We want to outfit a van with a 4' dish for Balloon Tracking live downlink
> video and not have it blow off the roof at 70 MPH.
>
> I'm considering changing over many of our student projects to high altitude
> "cubesats" that can be completed in one semester and actually LAUNCHED (by
>
Ple
