The old motor-90

4wd

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Story of a trusty old friend, serving it's owner trough rain, snow, cold and heat for 25 years.

This motor\90 cm's life began in approx 1990 (the woman in the house got very angry, of course :0) !!no such ugly thing on the house, we can't afford this, what will the neighbours say!! etc etc). Was initially mounted on a chimney (countless numbers of trips up the ladder to adjust, or remove snow) then some firemen had an inspection and somehow deemed it unsafe, moved it to a wall at standing height, 500% more practical.

Started with analog 19 & 13 E, later got a 'tampered' skybox that lasted a while, then run filmnet etc with Season, homemade etched print to make a card interface for rs232 running on an old pc for decrypting, continuously hunting for keys on the net. Those where the days of youth and fun! (I know no talk of decrypting here, but suppose this is ok as old historical anecdote).

The 90 also saw many visits to 27,5W as Discovery was FTA there. Several analog receivers (Echostar, Triax) later got a digital box, with the 90 doing Astra 19E only. Later got a new dish for 19E and the 90 went to 28.2 and did a great job there up until relegated when the new UK beams forced a change to larger replacement. Now it's back alive, doing tests on 5W.

The LNB is approx 15 years old, no problems. The motor still runs like new 25 years ago. May dismantle it one day to clean\relubricate all moving parts, and mount the dish properly for hunting purposes. Still don't know much about anything, but somehow always manage to get a picture and a stable setup, and thanks to the forum here, lot's of good info indeed. Btw, anyone recognizes the motor system?
 

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pontiend

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I know what you mean.:)What is it with wifes.My TD88 has been up eight years now.
I am still getting nagged to take it down.It is an eyesore she says.
 

Trust

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Looks like a Echo Horizon Mount
 

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4wd

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4wd

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Hello, anyone knows how to get a good tracking arc on this thing? Looking for 28E to 30W, just for the challenge. Did it 20+ years ago and all was good, but lost the paperwork (and cannot find any exact info on the net).

The A scale 90-0-90 is easy. But the B scale (the 'eccentric' dish holder) taking care of the arc is ...mysterious. Labeled with tw0 0's 180% apart, with 1 to 10 to 1 & -1 to -10 to-1. Have tried by error and trial for some days and always getting a few sats, but am far from any control over the arc. There must be a correct starting point that makes it possible.

Thanks for any help.
 

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Trust

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Thats the Declination scale , depends what Latitude you are .
Now you have the 2 pages , there is no more .(at here)
 

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4wd

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^Thanks. Now how to relate the -10 +10 hub scale to this:

Address: bergen
Latitude: 60.3913°
Longitude: 5.3221°
Satellite: Motorized
Elevation: 30.0°
Azimuth (true): 57.3°
Azimuth (magn.): 57.3°

"I learn, I get better" >
 

4wd

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Went to work today. Still no understanding of the hub angle numbering vs degrees etc, so got an idea:

using Thor 1° W as centre reference, adjusted for good signal, with dish horizontal ref. taped-on leveling ruler. Moved dish max E then max W, observing how the leveling air bubble behaved L & R. Could immediately see the arc was originally completely off. Repositioned hub, then adjusting dish again for good 1 W reception. Repeated process until the leveler showed even on max E and max W position. It worked! Can of course need some fine adjusting, but now got all the sats I looked for :) (I learn lol).
 

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4wd

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And here it is, the 90 providing great service again, Astra 19 at the back of my garden i France, found an opening between trees and mountains, 30 m of cable. Pole was just hammered 1 m into ground, stable enough (ftm) for fixed (no motor) reception :O)

To thank it for long and trusty duty, treated it to an Invacom twin, good lnb indeed. 17dB \100% on everything.
 

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jeallen01

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Somewhere in England (possibly?)!
4wd

FWIW, based on your post of April 15, 2015, where you said that your locatio was Bergen at 5.3221° - which I assume means 5.3221 E - you appear to have set the wrong central sat and you should have used Astra at 4.8 E (if you have not already done that since 2015!) instead of Thor at 0.8W! ;)

Hope you have now got the right sat for the Alpes Maritimes :)
 
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4wd

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^^^ Thanks for info, could be useful for the future. But ain't using any motorised since long ago. Was replaced by a T90 which I found more suited to my use (recording from several sats, no delays with much zapping). The motor 90 is now planted firm and not moving anywhere, ref post above.
 
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