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On Friday, December 9th, 2011 at 04:16:44h +0000, John Legon wrote:

It would have been much better - having now seen how a motorised dish
works ...

... to have bought a motor.

Still not too late though.

..

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"John Legon" wrote in message
...
At 14:35:06 Thu, 8 Dec 2011, Rick wrote:

I appreciate that it's a slightly different setup from what the original
poster had in mind, but this is how I added a Triax multi LNB kit to a
standard 60 cm dish, works very well with my Technomate HD receiver and
before anyone points it out, no I haven't got around to replacing the self
amalgam tape on one of the LNBs, although the good quality F connectors
are
pretty waterproof anyway.

http://dl.dropbox.com/u/11815200/dis...%201199%29.jpg

http://dl.dropbox.com/u/11815200/dis...x%20808%29.jpg

http://dl.dropbox.com/u/11815200/dis...x%20810%29.jpg

http://dl.dropbox.com/u/11815200/dis...x%20810%29.jpg

It's good to see other people taking the multi-LNB approach, but it
raises the question, what to do with the spare port on your four-way
DiSEqC switch?

Even if it were possible to squeeze a fourth LNB onto a 60 cm dish
(and get a signal), there's no very obvious choice of fourth satellite,
so I connected my fourth port to a spare dish which I could point to any
satellite that looked interesting. This started my interest in 3D TV,
after finding FTA channels at 23.5 E and 9 E. (Two more have since
started at 30 W, plus Sky and Astra 3D at 19.2 E.)

However, I made the mistake of mounting the dish on a vertical pole,
which meant that when I moved the dish from one satellite to another,
both azimuth and elevation had to be adjusted.

It would have been much better - having now seen how a motorised dish
works - to have tilted the pole, so that the rotation of the dish
tracked the geo-stationary orbit. The satellite positions would then
have been marked off on an index scale, making it easy to go from one
fourth satellite to another. A good system for a ground-based spare
dish in fine weather :)


If you have a trade source then a USALS motor is pretty cheap and dead
simple to add, uses existing coax and once accurately set up on one
satellite, it will automatically find and memorise the others.

http://en.wikipedia.org/wiki/Universal_Satellites_Automatic_Location_System

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Rick wrote:

"John Legon" wrote in message
It would have been much better - having now seen how a motorised dish
works - to have tilted the pole, so that the rotation of the dish
tracked the geo-stationary orbit. The satellite positions would then
have been marked off on an index scale, making it easy to go from one
fourth satellite to another. A good system for a ground-based spare
dish in fine weather :)


If you have a trade source then a USALS motor is pretty cheap and dead
simple to add, uses existing coax and once accurately set up on one
satellite, it will automatically find and memorise the others.

Sorry I didn't make it clear - I've been using a motor for quite some
time, as described here in previous posts. The arrangement using the
fourth port on a DiSEqC switch to connect up a spare dish to a multi-LNB
set-up was a short term arrangement, but it worked well for a time.

However, I've still kept the dish with the three LNBs, and run the two
systems side-by-side to feed two receivers in different rooms. Both
arrangements have their advantages - the multi-LNB system for instant
switching between satellites, and the motor for total flexibility.

I tested the motor on a temporary base before fixing it to the wall:

http://www.john-legon.co.uk/temp/oldmount.jpg

The Ross bracket looks a bit flimsy but it's easily strong enough when
securely mounted.

--
John L

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J G Miller wrote:
On Friday, December 9th, 2011 at 04:16:44h +0000, John Legon wrote:

It would have been much better - having now seen how a motorised dish
works ...

... to have bought a motor.

Still not too late though.

Indeed not! Here are my fixed and motorised dishes as they appear at
the present time:

http://www.john-legon.co.uk/temp/DSCF0888.JPG

The dish with the motor is pointing to 30 W.

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On Saturday, December 10th, 2011, at 15:40:40h +0000, John Legon explained:

The dish with the motor is pointing to 30 W.

Are they both 600 mm dishes?

Can you get Badr at 26 East without problems?

Do you have to keep the hydrangea bush trimmed?

Ross SD kit for F1 next year / Panasonic Freesat HD TV
 

J G Miller wrote:
On Saturday, December 10th, 2011, at 15:40:40h +0000, John Legon explained:

The dish with the motor is pointing to 30 W.

Are they both 600 mm dishes?

Yes.

Can you get Badr at 26 East without problems?

Nope, these dishes don't have the resolving power, but I can get most of
the other positions around to about 40 E.

Do you have to keep the hydrangea bush trimmed?

Yes I do. But it would be trimmed once a year anyway. It doesn't
interfere with the signal as much as one might think.

Ross SD kit for F1 next year / Panasonic Freesat HD TV
 

"John Legon" wrote in message
...
Rick wrote:

"John Legon" wrote in message
It would have been much better - having now seen how a motorised dish
works - to have tilted the pole, so that the rotation of the dish
tracked the geo-stationary orbit. The satellite positions would then
have been marked off on an index scale, making it easy to go from one
fourth satellite to another. A good system for a ground-based spare
dish in fine weather :)


If you have a trade source then a USALS motor is pretty cheap and dead
simple to add, uses existing coax and once accurately set up on one
satellite, it will automatically find and memorise the others.

Sorry I didn't make it clear - I've been using a motor for quite some
time, as described here in previous posts. The arrangement using the
fourth port on a DiSEqC switch to connect up a spare dish to a multi-LNB
set-up was a short term arrangement, but it worked well for a time.

However, I've still kept the dish with the three LNBs, and run the two
systems side-by-side to feed two receivers in different rooms. Both
arrangements have their advantages - the multi-LNB system for instant
switching between satellites, and the motor for total flexibility.

I tested the motor on a temporary base before fixing it to the wall:

http://www.john-legon.co.uk/temp/oldmount.jpg

The Ross bracket looks a bit flimsy but it's easily strong enough when
securely mounted.



As well as the multi-LNB 60 cm dish, which feeds my den, I also have a 80 cm
with a quad LNB, feeding different rooms, mounted on the back of my garage
away from the front of the house, the advantage of a multi LNB system is
that my Technomate receiver allows for virtually instant, seamless (and
noiseless!) switching between various channels on different satellites.

http://dl.dropbox.com/u/11815200/80cmdish.jpg

I did have a USALS motorised dish attachment many years ago but sold (and
fitted) the system to an Iranian friend, I've never bothered to replace it,
although if I survive the winter it may well be a little project for the
next summer.

During the early 1990s I had 1.2 metre free standing polar mounted dish at
the bottom of the garden, unfortunately one dark night it disappeared, my
garden backs on to a graveled lane, which is only a matter of feet away from
neighbours bedroom windows, it must have taken three or four men to have
lifted it over a 6 foot fence, with trees in between that and the lane and I
assume transported it away in a van.

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In article , John
Legon scribeth thus
J G Miller wrote:
On Friday, December 9th, 2011 at 04:16:44h +0000, John Legon wrote:

It would have been much better - having now seen how a motorised dish
works ...

... to have bought a motor.

Still not too late though.

Indeed not! Here are my fixed and motorised dishes as they appear at
the present time:

http://www.john-legon.co.uk/temp/DSCF0888.JPG

The dish with the motor is pointing to 30 W.

Much neater that all that skyline Thelves bling;!....
--
Tony Sayer

Ross SD kit for F1 next year / Panasonic Freesat HD TV
 

tony sayer wrote:
In article , John
Legon scribeth thus
Indeed not! Here are my fixed and motorised dishes as they appear at
the present time:

http://www.john-legon.co.uk/temp/DSCF0888.JPG

The dish with the motor is pointing to 30 W.

Much neater that all that skyline Thelves bling;!....

No doubt about it - assuming you mean Televes and not something entirely
different! :-)