Help Required Raven 1.8m motorised dish/polar mount instructions needed

marcouk said:
No just what came with the dish.
Click to expand...
Then currently there is no point in delving further with front end issues until you have a substitute.

I alluded to the mast earlier, based on your first post image

M

Help Required Thread 'Raven 1.8m motorised dish/polar mount instructions needed'

Hi guys

I have finally got around to installing the Raven 1.8 motorised dish kit I bought last October but have run in to a bit of a snag (no instructions)
I've searched the web high and low but can only find instructions for the fixed version.
That helped a bit but its the settings for the polar mount that I really need as I just cant get it to follow the whole arc correctly.
moving the dish about by either hand or motor I can get from 30east to 34 west (and all in between ) with really impressive signal levels but not all in one go.
after trying again today (in between downpours)...

There is a distinct possibility that the weight of the dish at different angles will distort the arc no matter how rigid the post and clamping plate is.

I would suggest locking up the polarmount to its true south setting and moving the dish over to one of the weaker satellites, then adjust the elevation to locate the strongest signal. Once you have the besty alignment then start playing with the feed system to optimise the signal.
 
Update

Well guys it looks like we've sorted it!

It was the lnb position that was wrong. I struggled to get it facing any higher up the dish face due to f connector pushing up against the bottom arm of the lnb holder .
I've placed the lnb upside down on the holder (its an inverto with the coax coming of a stub on the bottom) and the signal has gone up by an amazing amount.
I then rechecked the polar mount with a spirit level and noticed that there was the tiniest bit of lean towards the eastern end of the ark.
a few minor adjustments and that was sorted.
then rechecked the arc and...... 30 east 84% 1 west 100% ,30 west 100% ,34 west 70% then moved dish over to 7 west and would you believe it 74 % (12.2 DB on 11.315v) which is the best strength I've ever had it.
then checked 26 east and it comes in at 90% on some of the stronger transponders (none of the others are below 10 DB) which again is the best I've ever had it.
Then there was a surprise.. checked 28 east and all of the BBC channels are 100% but some of the others are as low as 70% (9.0 DB)
Astra@ 19 east is around 85% Hotbird 90%.

Thank you so much guys for all of your help I would not of thought of checking some of things that I did if you hadn't of suggested them to me.

Cheers

Mark
 
marcouk said:
I struggled to get it facing any higher up the dish face due to f connector pushing up against the bottom arm of the lnb holder .
Click to expand...
Just shorten the feedarms for a couple of cm, and you will get no issue that LNB-connector touching the holder.
 
marcouk said:
Update

Well guys it looks like we've sorted it!

It was the lnb position that was wrong. I struggled to get it facing any higher up the dish face due to f connector pushing up against the bottom arm of the lnb holder .
I've placed the lnb upside down on the holder (its an inverto with the coax coming of a stub on the bottom) and the signal has gone up by an amazing amount.
I then rechecked the polar mount with a spirit level and noticed that there was the tiniest bit of lean towards the eastern end of the ark.
a few minor adjustments and that was sorted.
then rechecked the arc and...... 30 east 84% 1 west 100% ,30 west 100% ,34 west 70% then moved dish over to 7 west and would you believe it 74 % (12.2 DB on 11.315v) which is the best strength I've ever had it.
then checked 26 east and it comes in at 90% on some of the stronger transponders (none of the others are below 10 DB) which again is the best I've ever had it.
Then there was a surprise.. checked 28 east and all of the BBC channels are 100% but some of the others are as low as 70% (9.0 DB)
Astra@ 19 east is around 85% Hotbird 90%.

Thank you so much guys for all of your help I would not of thought of checking some of things that I did if you hadn't of suggested them to me.

Cheers

Mark
Click to expand...
Good result, you may find there is too much signal on the high powered satellites, so a switchable attenuator may be next.
 
Channel Hopper said:
Good result, you may find there is too much signal on the high powered satellites, so a switchable attenuator may be next.
Click to expand...
That's just what I was thinking too much signal on the strongest sats over loading the tuner.
not too worried about it though as its only the weaker sats that I'm after. I know it is now on the arc and that's all that matters.
Just noticed that in 14 west I can get the Russian channel again (3.0 db) I read somewhere that this one is really hard to get in the uk so I'm very happy.

Once again thank you for all your help and I hope to see you all in the feed hunters section.

Cheers

Mark
 
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