[NLRS] Dish experts

[Marciniak, Ed]

The aperature difference would be close to 2dB (a bit less than), assuming the same feed efficiency (which may not actually be the case)

----- Original Message -----
From: nlrs-bounces at mailman.qth.net <nlrs-bounces at mailman.qth.net>
To: W0ZQ at aol.com <W0ZQ at aol.com>; nlrs at mailman.qth.net <nlrs at mailman.qth.net>
Sent: Fri Apr 09 19:19:23 2010
Subject: Re: [NLRS] Dish experts



First question is "How many LNBs does it have ?"

I'll bet a nickel its two or three, not one.  The "extra" dimensions largely 
allow the other LNBs to have the same gain as a single one.

I'd be willing to bet another nickel that the total "extra" gain is about 1 dB. 
It can't be as much as 3dB... the area of the bigger dish is (much) less than 
2X, so ....

73 Donn

----- Original Message ----- 
From: <W0ZQ at aol.com>
To: <nlrs at mailman.qth.net>
Sent: Friday, April 09, 2010 11:52 PM
Subject: [NLRS] Dish experts


>
>
> It scrappy days here in Bloomington - Bloomington homeowners can set out
> whatever at the curb and the trash haulers will pick it up Saturday  morning.
> My XYL, while scouting out the neighbors "junk", found a dish  complete
> with feed arm.   The dish measures 36" high and 32"  wide.  This compares to
> my current dish of 26" high and 23.5" wide.   By current dish is steel, the
> bigger dish appears to be aluminum, and the weight  is about equal.  Question
> - how much more gain may the bigger dish have  compared to my current dish ?
>
> 73, Jon
> W0ZQ
>
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