One dish solution?

[john]

Archived from groups: alt.video.satellite.mpeg-dvb (More info?)

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.

 

[Guest]

Archived from groups: alt.video.satellite.mpeg-dvb (More info?)

On Sat, 29 May 2004 07:40:08 -0600, "John" <jtcombs@REMOVEyahoo.com>
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.
>


You can easily do this with a DirecWay or StarBand dish.
A 'SuperDish' from dishnetwork should also be a piece of cake.

 

[Guest]

Archived from groups: alt.video.satellite.mpeg-dvb (More info?)

On Sat, 29 May 2004 07:40:08 -0600, "John" <jtcombs@REMOVEyahoo.com> 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.
>

Buy a TOROIDAL 55 type dish. It will allow you to put up to 10 LNB
anywhere you want to cover slots spread across 40 degrees.

 

[Guest]

Archived from groups: alt.video.satellite.mpeg-dvb (More info?)

"-M" <racecraft.motorsports@verizon.net> wrote in message
news:fashb0hjtsdu9qkd3n1hnm75mspus6mpen@4ax.com...
> On Sat, 29 May 2004 07:40:08 -0600, "John" <jtcombs@REMOVEyahoo.com>
wrote:
>
> Buy a TOROIDAL 55 type dish. It will allow you to put up to 10 LNB
> anywhere you want to cover slots spread across 40 degrees.

The 90 isn't that much more. Less cloud fade and closer LNB spacing.

 

[Guest]

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.

--

 

[Guest]

Archived from groups: alt.video.satellite.mpeg-dvb (More info?)

"john wilson" <jwilson9@erols.com> wrote in message
news:40DDDFAF.51110A5E@erols.com...
> 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.

Doesn't the toroidal dish design solve those objections?
See: http/www.multilnbdish.com

 

[Guest]

Archived from groups: alt.video.satellite.mpeg-dvb (More info?)

On Sat, 26 Jun 2004 16:46:13 -0700, "Erazmus B. Draggin"
<anyone@anywhere.com> wrote:

>
>"john wilson" <jwilson9@erols.com> wrote in message
>news:40DDDFAF.51110A5E@erols.com...
>> 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.
>
>Doesn't the toroidal dish design solve those objections?
>See: http/www.multilnbdish.com
>

The C-band Simulsat dishes I've seen are direct prime focus toroidal
dishes. I think the elliptical DBS dishes are Torus I belive also.