Motorised dish and 1w

jpsr

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1.2 channel master, cm polar mount, 12 inch actuator, Andrews feedhorn, Inverto lnb, Superjack positioner, Dreambox dm 500s, Protek 9600ip, 1m channel master with black ultra & 1m gibertini with technomate twin output lnb on astra 1/2, TM 5200 & 1000
My Location
Mullingar, Ireland
I've recently set up a 1m channel master on a stab motor with invacom 0.3db lnb with matching cm feedhorn.
Receivers are technomate 5402 m3 and dreambox 525.
Im getting 97% on my technomate from most Sat's, and fine tuned the dish to get between 79-85% on 26e on a dry day, that's sky news.

1w I'm having problems with a few transponders.
One of them is 10778v 2500.
On a dry day it's up to 65%, but as soon as drizzle comes or clouds with lots of moisture are over, I lose the channels.
I know some are weak on there, but I thought I should be getting that tp.
It's been a while since I've had a motorised dish up and I've forgotten what I used to get on 1w.

Im in the Midlands of Ireland, could anyone tell me what % they get on that tp or any other channels.
Thanks.
 

Terryl

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OpenBox X5 on a 1 meter motorized dish.
And now a 10 foot "C" band dish.

Custom built PC
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Deep in the Boonies in the central Sierra Nevada mountains of California.
Sounds like the dish may have dropped, or the mast is not truly vertical, can you reach the dish/mast from the ground?

If so then try a piece of wood 2x2 pushing up a tiny bit on the dish, then look at your "S", if it improves then your dish needs to be re-adjusted or the mast needs to be checked to be sure it's truly vertical.

Also if the mounting mast is too small in wall thickness it can sag or bow to the front after you mount the dish, this can also happen if the mast is quite long.

Photos of the install can help us.

And nothing much can be done for wet weather except for a bigger dish.
 

Chr0nik

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TM-9100 Linux receiver / Edision OS mini 4K / TM-2600 M3 motor / 110cm dish (34.5w to 50e) - 100cm dish (51.5e/52e/53e/60e)
My Location
Grays, Essex
I get around 13.4dB (89 - 90%) on a 110cm dish in Essex. What do you get with Sky News International?
 

jeallen01

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FWIW, here in W. London (0.41 degs W), I would expect the stronger channels to be around at least 85-95% SS on a 1m dish - so I would agree with @Terryl that the dish has "drooped" a tad for some reason (his suggestions for why seems eminently reasonably).
 

jpsr

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My Satellite Setup
1.2 channel master, cm polar mount, 12 inch actuator, Andrews feedhorn, Inverto lnb, Superjack positioner, Dreambox dm 500s, Protek 9600ip, 1m channel master with black ultra & 1m gibertini with technomate twin output lnb on astra 1/2, TM 5200 & 1000
My Location
Mullingar, Ireland
Sounds like the dish may have dropped, or the mast is not truly vertical, can you reach the dish/mast from the ground?

If so then try a piece of wood 2x2 pushing up a tiny bit on the dish, then look at your "S", if it improves then your dish needs to be re-adjusted or the mast needs to be checked to be sure it's truly vertical.

Also if the mounting mast is too small in wall thickness it can sag or bow to the front after you mount the dish, this can also happen if the mast is quite long.

Photos of the install can help us.

And nothing much can be done for wet weather except for a bigger dish.
The pole I'm using is 60mm concreted into the ground, the pole is 100% plumb all round.
I have the correct lat long settings on dish and receiver, also motor and dish a lining through. I'm getting 97% quality on 30w and most are the same on 39e, so seems to be tracking the arc fine.
 

jpsr

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My Satellite Setup
1.2 channel master, cm polar mount, 12 inch actuator, Andrews feedhorn, Inverto lnb, Superjack positioner, Dreambox dm 500s, Protek 9600ip, 1m channel master with black ultra & 1m gibertini with technomate twin output lnb on astra 1/2, TM 5200 & 1000
My Location
Mullingar, Ireland
I get around 13.4dB (89 - 90%) on a 110cm dish in Essex. What do you get with Sky News International?
Im getting 97% quality 14.0db on sky news.
 

jeallen01

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jpsr

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My Satellite Setup
1.2 channel master, cm polar mount, 12 inch actuator, Andrews feedhorn, Inverto lnb, Superjack positioner, Dreambox dm 500s, Protek 9600ip, 1m channel master with black ultra & 1m gibertini with technomate twin output lnb on astra 1/2, TM 5200 & 1000
My Location
Mullingar, Ireland
FWIW, here in W. London (0.41 degs W), I would expect the stronger channels to be around at least 85-95% SS on a 1m dish - so I would agree with @Terryl that the dish has "drooped" a tad for some reason (his suggestions for why seems eminently reasonably).
Yes I'm getting up to 97% on the stronger tps. About 70 % on some weaker ones, but it's very overcast here now with plenty of clouds full of moisture that seems to be knocking off the weakest tps.
 

antrabe

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I recently install a kathrein dish 1m on stab but in the south of Spain and after test several lnbs with invacom i got worse results than the lnb golden media 202+ and better picture quality than with the invacom quad.

Which weight has that channel master because as i understood are too much heavier than others.
 

jpsr

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My Satellite Setup
1.2 channel master, cm polar mount, 12 inch actuator, Andrews feedhorn, Inverto lnb, Superjack positioner, Dreambox dm 500s, Protek 9600ip, 1m channel master with black ultra & 1m gibertini with technomate twin output lnb on astra 1/2, TM 5200 & 1000
My Location
Mullingar, Ireland
I recently install a kathrein dish 1m on stab but in the south of Spain and after test several lnbs with invacom i got worse results than the lnb golden media 202+ and better picture quality than with the invacom quad.

Which weight has that channel master because as i understood are too much heavier than others.
It's a 1m and the azel mount is smaller and lighter than the one on my cm 1.2.
All round its way lighter than my 1.2 and the stab is well able to move it without any problems.
 

jpsr

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My Satellite Setup
1.2 channel master, cm polar mount, 12 inch actuator, Andrews feedhorn, Inverto lnb, Superjack positioner, Dreambox dm 500s, Protek 9600ip, 1m channel master with black ultra & 1m gibertini with technomate twin output lnb on astra 1/2, TM 5200 & 1000
My Location
Mullingar, Ireland

jpsr

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My Satellite Setup
1.2 channel master, cm polar mount, 12 inch actuator, Andrews feedhorn, Inverto lnb, Superjack positioner, Dreambox dm 500s, Protek 9600ip, 1m channel master with black ultra & 1m gibertini with technomate twin output lnb on astra 1/2, TM 5200 & 1000
My Location
Mullingar, Ireland

jpsr

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My Satellite Setup
1.2 channel master, cm polar mount, 12 inch actuator, Andrews feedhorn, Inverto lnb, Superjack positioner, Dreambox dm 500s, Protek 9600ip, 1m channel master with black ultra & 1m gibertini with technomate twin output lnb on astra 1/2, TM 5200 & 1000
My Location
Mullingar, Ireland

Captain Jack

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Ireland is getting out of some footprints from 1W so not surprising that some channels are not coming in. Here in Bristol, I need 1m dish at minimum to get the weaker stuff semi reliably. 1.2m is preferable...
 

Terryl

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OpenBox X5 on a 1 meter motorized dish.
And now a 10 foot "C" band dish.

Custom built PC
My Location
Deep in the Boonies in the central Sierra Nevada mountains of California.
Yes I'm getting up to 97% on the stronger tps. About 70 % on some weaker ones, but it's very overcast here now with plenty of clouds full of moisture that seems to be knocking off the weakest tps.
Yes that is a big problem with Ku band frequencies, they don't like several kilometres of water vapour in the way, the more water vapour, the bigger the attenuation.

The only proven way to fix it is with a bigger dish, in the CATV industry we used 6 foot to 10 foot dishes for the Ku band down links, less chance of a fade out during bad weather. We used "C" band for the premium channel feeds. (here state side)
 

Chr0nik

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TM-9100 Linux receiver / Edision OS mini 4K / TM-2600 M3 motor / 110cm dish (34.5w to 50e) - 100cm dish (51.5e/52e/53e/60e)
My Location
Grays, Essex
I'm currently putting up a 120cm prime focus and got it pointed at 0.8w and the signal seems to be worst than my other 110cm cheap offset.

The prime focus is on a plumb pole and has a Inverto White Tech LNB and when pointed and tuned to Sky News International; it goes from 15.1db to 15.3db but on the 110cm dish, it goes up to 16.6db.

I've tried playing with the elevation but cannot change the dish declination because the bolts are rusted and cannot turn them. I assume this is the cause of the issue.
 

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TJExcalibur

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The dish face should be almost vertical so you are way out. Get some WD40.
 

ozumo

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Try comparing a weaker transponder. Declination adjustment doesn't matter if the dish is not motorised.
 

moonbase

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The dish face should be almost vertical so you are way out. Get some WD40.


If you are referring to the IRTE dish install of "Chr0nik", it is a prime focus dish, the dish face should be nowhere near vertical for 0.8W at a UK location.
 

moonbase

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I'm currently putting up a 120cm prime focus and got it pointed at 0.8w and the signal seems to be worst than my other 110cm cheap offset.

The prime focus is on a plumb pole and has a Inverto White Tech LNB and when pointed and tuned to Sky News International; it goes from 15.1db to 15.3db but on the 110cm dish, it goes up to 16.6db.

I've tried playing with the elevation but cannot change the dish declination because the bolts are rusted and cannot turn them. I assume this is the cause of the issue.


If you are to correctly align the dish to the arc you might get away without having to adjust the declination offset angle if the angle was correctly set previously and if the angle for your location is close to that of the original location.

You should be able to peak the signal level by adjustment of the elevation bolt, possibly one sixth of a turn of the hex nut at a time. Also, if the motor is wired up you could nudge the dish East/West one click at a time around the 0.8W position to see if it improves the signal.
 
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