Re: HollStar Dishes -- The Astra 2D Forum

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Subject: Re: HollStar Dishes

Author:
Outsider

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Date Posted: 08:45:15 12/25/03 Thu
In reply to: Bobben 's message, "Re: HollStar Dishes" on 04:56:09 12/25/03 Thu

>>>And the dishes are crap. Steer well clear.
>>
>>CAN YOU CLARIFY WHAT YOU MEAN AS I WAS ABOUT TO ORDER
>>A 2.7M DISH FROM THEM.
>
>I dont have any experiance with this antenna.
>
>The antenna efficiency at 11.3GHz is 58,4% and thats
>not wery good. My 1.2m offset has 71.5%. Its only
>around 1dB in gain difference compared to a 2.7m with
>71.5% - not that much.
>
>Be aware that the antenna will need a extremely good
>fundament. It is also far more difficult to install a
>big antenna as it needs to be spot on - a slightly
>mispointing by half a degree and a spot on 1m antenna
>will probably perform just as good.
>
>If the fundament is not extremely good the antenna
>can easily move 0.5 degrees in windy condition.

I found Bobben's comment a bit confusing but after reading it at least ten times I think he was just saying that a dish with efficiency 58.4% has about 1dB less gain compared to a dish of the same size but with efficiency 71.5%. I agree with that :)

In my opinion 47.3dB gain for 2440mm x 2630mm dish, and the corresponding efficiency of around 60%, is not a bad spec. However, the HollStar dishes are intended to be used with normal LNBFs and come without a matching feedhorn, one can just wonder what is the feed that the given gain has been measured with. Because the feedhorns of different LNBFs are not equal, it's up to the buyer to find a LNBF that makes a good match with the dish.

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Replies:

Subject	Author	Date
Re: HollStar Dishes	Bobben	10:20:48 12/25/03 Thu
Re: HollStar Dishes -- JTA, 04:36:15 12/26/03 Fri Re: HollStar Dishes -- JVT, 12:39:05 12/26/03 Fri
Re: HollStar Dishes	pipoo	00:38:45 12/27/03 Sat