Quote:
Originally Posted by
digiblur 
What modulation schemes are being used? Can do you do both C and KU or just one or the other?
Also, is there somewhere else to view the pictures? I don't do the SpaceBook thing anymore

The standard pretty much is DVBS.. our old sat truck does that... Newer encoders somtimes use DVBS2... Our uplink should be installed on Tuesday (weather permiting) so I will know more about what it will do then.
quoting from WikiPedia..
These distribution systems differ mainly in the modulation schemes used and error correcting codes used, due to the different technical constraints. DVB-S (SHF) uses QPSK, 8PSK or 16-QAM. DVB-S2 uses QPSK, 8PSK, 16APSK or 32APSK, at the broadcasters decision. QPSK and 8PSK are the only versions regularly used. DVB-C (VHF/UHF) uses QAM: 16-QAM, 32-QAM, 64-QAM, 128-QAM or 256-QAM. Lastly, DVB-T (VHF/UHF) uses 16-QAM or 64-QAM (or QPSK) in combination with COFDM and can support hierarchical modulation.
Both of our uplinks are Ku only.. I was hoping for a C-band uplink.. but that is much more expensive and more difficult to license.
As for our microwave equipment... they also use DVB usually 16 - QAM.. or QPSK.. however our newest ones also do something called LST... not sure exactly what that is.. but it is used with the portable camera microwaves so I assume it is better at staying locked on to signals from transmitters that are moving around.
The alphabet soup of acronyms is difficult :-)