1.1 triax gives better results than my 1.3 aluminium primsat dish

[archive10]

Could you hold a measuring tape to the dish horizontally and vertically and confirm the size?

 

[Spiff]

Could you hold a measuring tape to the dish horizontally and vertically and confirm the size?

Hallo what a lovely day, I hope it is the same with yourself : )
1.35m X 1.23m to the rims at the face, the working bit.
Something extra not mentioned before is that I used the same dual output Inverto Black LNB that was fitted to the Triax initially, this gave much lower signals, I then tried another dual output Inverto Black LNB same poor results.
Went on to try various others then settled on a single output Inverto Black LNB which gave results just a few points lower than the smaller Triax.
Kind Regards Spiff

 

[archive10]

Hallo what a lovely day, I hope it is the same with yourself : )

Very nice, here, thanks.

1.35m X 1.23m to the rims at the face, the working bit.

Ok - that confirms a couple of things.
1) You do have the model 1.3m, not the 1.1m (At least you don't have the wrong model)
2) Your dish is actually a ~120 cm effective reception area (horizontal value minus a few cms) - not bad, same as 125 cm Gibby, Channel Master 120 etc.
3) The Triax 110 cm is actually a 100 cm dish, as it's 100x105 cm according to data sheet.
4) the 120 is about 1,44* the size of the 100, which translates to roughly 2,5 dB more gain.

So you should definitely have better reception on the 1.3 than on the Triax.

Which means something is most likely wrong with the 1.3 - hope the SSS people can come back with an explanation.

 

[Spiff]

Very nice, here, thanks.


Ok - that confirms a couple of things.
1) You do have the model 1.3m, not the 1.1m (At least you don't have the wrong model)
2) Your dish is actually a ~120 cm effective reception area (horizontal value minus a few cms) - not bad, same as 125 cm Gibby, Channel Master 120 etc.
3) The Triax 110 cm is actually a 100 cm dish, as it's 100x105 cm according to data sheet.
4) the 120 is about 1,44* the size of the 100, which translates to roughly 2,5 dB more gain.

So you should definitely have better reception on the 1.3 than on the Triax.

Which means something is most likely wrong with the 1.3 - hope the SSS people can come back with an explanation.

Thank you for all the information that is very kind.
It was an ideal dish due to its weight using a diseqc motor.
Hopefully they will except that there is a problem.

I have used RG6 cable as a reel was over from the Freesat installation.
All sellers online claim their cable is the best thing since sliced bread : ).
I have not shopped around for prices yet but the advice on this site looked to be an honest opinion.
Distance between dish and receiver around 20m

M

 

[timo_w2s]

I think WF125 is overkill on a short cable run of 20m. You'd also need to make up shorter patch cables at either end or risk breaking the inputs as the cable is quite thick and solid. WF100 is more than good enough and your current cable is probably OK as long as it's double insulated, which it should be if it was for Freesat.

 

[sonnetpete]

It was an ideal dish due to its weight using a diseqc motor.

Interesting : The Laminas I have on my diseqc motor weighs 8kg (including the mount) and has a gain of 42.1 dB. I can't find a reference to the weight of yours on the suppliers site, any idea? Anyway it's not so much the weight but the force of the wind on the dish face.

Edit : From the Primesat site, the 1.3M dish weighs 10.15kg.

 

[samoloko]

Spiff
did you try to adjust position / sku of lnb - Is there a maker description with dish telling where Is optimal lnb position
try to move dish up and down left and right and If that can not give you Increased SNR there Is a problem with dish
from pics I guess that this dish Is with less than 0.6 f/d which might be a reason for lower gain

 

[Archived-1]

Could we keep links to satellite shops coded please, post 24 now edited and link coded.

 

[Spiff]

Spiff
did you try to adjust position / sku of lnb - Is there a maker description with dish telling where Is optimal lnb position
try to move dish up and down left and right and If that can not give you Increased SNR there Is a problem with dish
from pics I guess that this dish Is with less than 0.6 f/d which might be a reason for lower gain

Good evening thank you for your post.
Have adjust LND sku plus front to back to max.
Nothing much in the way of instructions with the dish other that very small blured difficult to read assembly details on box : )
With less than 0.6 f/d does this refer to focal distance, I am not up to speed with the terms.
The lnb peaks at a point as far back as it will go away from the dish.
Regards Spiff

 

[samoloko]

Spiff
I can recommend you to return dish and get Gibby 1.2 you will have to pay additional

 

[archive10]

Good evening thank you for your post.
Have adjust LND sku plus front to back to max.
Nothing much in the way of instructions with the dish other that very small blured difficult to read assembly details on box : )
With less than 0.6 f/d does this refer to focal distance, I am not up to speed with the terms.
The lnb peaks at a point as far back as it will go away from the dish.
Regards Spiff

f/D refers to the focal depth related to the diameter of the dish. It is an expression of the illumination angle of the dish when seen from the LNB.
They key thing is that the feedhorn (often built-in) of the LNB has to match this figure.
Most (by far in terms of volume) modern consumer offset DTH dishes and LNBs are 0.6 f/D, making them all more of less compatible.
Prime focus dishes usually have a lower f/D around 0.3 or so, which means "universal LNBs" won't work, and you need a special feedhorn.

Although the SSS website doesn't specify f/D ratio for the dish, I would bet fairly confidently on your dish being 0.6 f/D, as most consumer-oriented dishes are these days.

 

[Spiff]

Interesting : The Laminas I have on my diseqc motor weighs 8kg (including the mount) and has a gain of 42.1 dB. I can't find a reference to the weight of yours on the suppliers site, any idea? Anyway it's not so much the weight but the force of the wind on the dish face.

Edit : From the Primesat site, the 1.3M dish weighs 10.15kg.

Good evening 10.69 on our postal sales so very close : )
What size is your dish

Spiff
did you try to adjust position / sku of lnb - Is there a maker description with dish telling where Is optimal lnb position
try to move dish up and down left and right and If that can not give you Increased SNR there Is a problem with dish
from pics I guess that this dish Is with less than 0.6 f/d which might be a reason for lower gain

Good evening 10.69 on our postal sales so very close : )
The dish is sheltered, the winds can be strong here as we are 50 yards from the sea to the west.
Corrosion from the salt air is the bigest problem the Triac has started after only two years, I did consider inporting a fiberglass dish from Poland but it was an unknown.

 

[Spiff]

Reply from SSS
Hi Allen, something is upside down either the backplate or the arms Dave
Have replied with following as I cannot see how it could have been assembled any other way.
Hallo Dave Thank for your email please see attached images.
There are only three holes in the dish rim for the LNB arms, please images showing top and bottom of the dish.
The motor bracket can only be fitted the way it is as the centre holes are closer to one end of the bracket than the other, please see picture.
Something on this one is not correct.
Kind Regards Allen
Any suggestions from members would be most help full : )
Regards Allen

 

[digi247]

Send it back someones made a boo boo at the factory and QC has gone out of the window for this one

 

[dxsat]

"Hi Allen, something is upside down either the backplate or the arms Dave"

Looks to me like both.
The arms will be holding the LNB in the wrong place. In addition, the dish has been distorted when you tightened the back mount to the dish .
(You said there had been a gap between them.)
Probably incorrect manufacture.

 

[sonnetpete]

What size is your dish

1.2M...next size up they do is 1.5m, a bit too large to go on a motor...

I did consider inporting a fiberglass dish from Poland but it was an unknown.

That's where my Laminas dish came from, though through their dealer here in France..has been up on the motor for over 5 years now and hardly a problem...

 

[Vipersan]

Send it back someones made a boo boo at the factory and QC has gone out of the window for this one

This is without doubt a major f...up ..
Had it not been assembled and thus distorted the dish on tightening ..it might have been possible to drill the missing hole(s) to save the hassle of returning it ..
but you'd never be sure it was perfect thereafter.
Under the circumstances Digi has it right ...send it back ..and tell them not to just send another from stock unless they assemble and check it thoroughly..
Chances are they have a bad batch ..and all those in stock may well have the same problem ..
I dont envy Spiff the hassle he has had and will have on their account ,..but I can see no other way around this.
doh!
rgds
VS

 

[4wd]

Send it back someones made a boo boo at the factory and QC has gone out of the window for this one

No doubt. Got a faval\primesat 125, comparing to mine, impression is all holes except maybe the one for bottom arm are drilled in the wrong place! Or the l\r holes for the arms are ok, and the bottom hole is wrong and the dish is upside down + wrong holes for the rear bracket! Quite a story, sorry for your ordeal.

Can't be sure by just looking at photos, but as it is now the l\r arms are too high on the dish, so the lnb focus\angle must be way out, probably the main reason for the bad results.

 

[Spiff]

No doubt. Got a faval\primesat 125, comparing to mine, impression is all holes except maybe the one for bottom arm are drilled in the wrong place! Or the l\r holes for the arms are ok, and the bottom hole is wrong and the dish is upside down + wrong holes for the rear bracket! Quite a story, sorry for your ordeal.

Can't be sure by just looking at photos, but as it is now the l\r arms are too high on the dish, so the lnb focus\angle must be way out, probably the main reason for the bad results.

Thank you for your post I kept looking at it and confirmation from others is just what was required, after 69 years I have learnt that I can be very wrong : )
Thank you also to all the others who have replied.
I have emailed the following to Dave at SSS
Hallo Dave,
I have posted images on a satellite forum and also sent them to friends in electronics.
They all agree that the dish has been incorrectly manufactured and could not have been assembled any other way.
It has been a while and caused me a great deal of time, trouble and stress to be certain I am correct.
The dish has been misshaped because the bracket mounting holes have been drilled in the wrong place in the dish, causing the bracket to mould the dish to fit it in the wrong position.
Would you kindly arrange to send a replacement checking first in case a batch of them have been made incorrectly.
If you want the faulty dish back please also arrange to have it collected.
Kind Regards Allen
http://www.shopingathome.com/Military Wireless.htm

 

[Captain Jack]

Or return for refund and get the Laminas There's one doing rounds on eBay at the moment.