Going from a 78cm dish to 88cm - major difference?

dankargo

dankargo

Specialist Contributor
My Satellite Setup
90cm Motorised
My Location
Brentwood
Hi guys,

My 10 year old dish has started to rust at the back and sides which has left me very very tempted to bin it and replace it with an 88cm. I've planned to replace the fixings with something more sturdy in any case but just wondered if upgrading the dish by 10cm would give me a major improvement from my current one.

On the strong sats I usually get around 80-85%, about 58-74% on the Nordic 1w beam and feeds vary, some of the weaker ones I can't get at all.

I've attached photos of my current dish - it's been up since about 2006 so over a decade old! I have a TM-2300 motor that I only put up last year, also considering changing this if I do decide to upgrade dish.
 

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Nowt wrong with that dish.

My 80cm Orbital also has rim rust, but there's no effect on performance.

If you want to slow down further rusting, just paint the rim with Kurust.
 
If your thinking Triax TD 88 then yes, that dish is more like a 95cm for actual usable reflector coverage. I wouldn't bother with the motor unless its the old stock Techno's that the rear clamp assembly rusted to #*"¶ in no time.

Sent from my thl_T7 using Tapatalk
 
Another name for Red.
 
Ghostleader said:
If your thinking Triax TD 88 then yes, that dish is more like a 95cm for actual usable reflector coverage. I wouldn't bother with the motor unless its the old stock Techno's that the rear clamp assembly rusted to #*"¶ in no time.

Sent from my thl_T7 using Tapatalk
Click to expand...

I think it probably is to be honest as the bolts look like they've already rusted after only a year!

Yep, a Triax 88 was exactly what I had in mind.
 
Yip that's the ones, the 2600 model up was also afflicted with the same issue mate.

Sent from my thl_T7 using Tapatalk
 
10cm increase in dish diameter increases its area by 31% - should give a significant improvement in signal providing larger dish is as efficient a design as the original.
 
Nothing that an application of Kurust wouldn't resolve.
 
Just common sense for a cheap yet effective solution.
 
Yes, ok, guess we will all have to believe that, but, two times within eight posts, on the same thread? Let alone the other threads it has been mentioned.
Must be commission based advertising and should be reported to Forum Gods, but alas .................

( Milamber has just exited the stage on the left! )
 
Ghostleader said:
If your thinking Triax TD 88 then yes, that dish is more like a 95cm for actual usable reflector coverage.
Click to expand...
davemurgtroyd said:
10cm increase in dish diameter increases its area by 31% - should give a significant improvement in signal providing larger dish is as efficient a design as the original.
Click to expand...
The TD88 is an 85 cm dish (width of dish).
Disregarding that the active areas is probably 82cm with normal LNBs, the dish dish is (85^2-78^2)*PI()*100/(78^2*PI()) == 18.75% bigger...
Maybe not worth the upgrade...
You'd probably want to go for a 100 cm (or larger). (100^2-78^2)*PI()*100/(78^2*PI()) == 64% bigger.
 
st1 said:
The TD88 is an 85 cm dish (width of dish).
Click to expand...
Absolutely true but a TD78 is not 78cm wide, it's only 70cm wide. Which makes the difference greater.
 
PaulR said:
Absolutely true but a TD78 is not 78cm wide, it's only 70cm wide. Which makes the difference greater.
Click to expand...
Yes thats rigt but the present dish aint a TDS78
 
Ah, how true. But, having said that, I'd like to know whether the 78cm alluded to in the original post is measured vertically or horizontally.
 
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