Archived from groups: alt.video.satellite.mpeg-dvb (
More info?)
On C band it is called a Simulsat. The idea has been around for years. The
downside of using multiple lnbs on one reflector (the dish is NOT the antenna.
The antenna is the probe inside the lnb) is that sidelobe reception is used.
This means that the strongest point or prime focus of only one satellite is
used. The other lnbs receive a weaker signal of the target satellites on
either side of the prime focus feed. As one who desired the strongest
satellite signal possible inputed to the receiver, I never cared for the
method. Try it at your own risk but don't complain about pixel freezing,
etc. Remember that DTV and Dish Network downlink signals are approximately 10
times stronger than the T5 Ku band signal.
I know DTV and Dish Network use the method today for reception of AMC2,
101W, 110W and 119W and Echostar 3 reception and I understand why, but I prefer
the reflector to be optimized on the target satellite signal.
John wrote:
> Are there any triple LNB set ups that would work to look at the 97, 110 and
> 119 degree slots? Are the angles on the DirecTV dishes flexible at all? I
> don't need much diameter for the IA5 (T5) slot because I'm right in the
> middle of the signal footprint and 22 inch works just fine.
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